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  1. AU="Nicole C. Deziel"
  2. AU="Shajrawi, Abedalmajeed Methqal"
  3. AU=Aydin Seckin AU=Aydin Seckin
  4. AU="Narwal, Vikrant"
  5. AU="Minamoto, Toshinari"

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  1. Article ; Online: Health risks of heavy metals in food and their economic burden in Armenia

    Davit Pipoyan / Stella Stepanyan / Meline Beglaryan / Seda Stepanyan / Robert Mendelsohn / Nicole C. Deziel

    Environment International, Vol 172, Iss , Pp 107794- (2023)

    2023  

    Abstract: Mining leads to excessive heavy metal contamination of agricultural products in Armenia and can adversely impact human health. We quantify the concentrations of toxic heavy metals (lead, nickel, cadmium, and mercury) in food sampled from local markets of ...

    Abstract Mining leads to excessive heavy metal contamination of agricultural products in Armenia and can adversely impact human health. We quantify the concentrations of toxic heavy metals (lead, nickel, cadmium, and mercury) in food sampled from local markets of the capital city, Yerevan. We combine these measured concentrations with data from a diet survey of 1,195 people. The results provide an estimate of people’s heavy metal intake in a typical day.The study finds that only dietary exposure to lead raises consumer safety concerns. More than 50 % of the population have daily intakes of lead that exceed the benchmark dose level (BMDL10) of 0.63 μg/kg b.w./day established by European Food Safety Authority. Moreover, risk assessment results indicate that approximately 96 % of the population has dietary exposure values for lead that exceed the threshold level, with animal products as the primary source. The lead exposure observed in sampled population has the potential to increase blood pressure on average by 0.54 mmHg, lower IQ levels by 1.2 point, and reduce lifetime earnings by $5000. The study reveals a strong need to determine the specific pathways by which lead enters the food supply, to mitigate the excess exposures, and to reduce the potential or severity of the resulting adverse health impacts.
    Keywords Heavy metals ; Food ; Health risk ; Economic burden ; Environmental sciences ; GE1-350
    Subject code 333
    Language English
    Publishing date 2023-02-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Steam cracker facilities in the United States

    Nicholaus P Johnson / Michelle L Bell / Nicholas Perez / Robert Dubrow / Nicole C Deziel

    Environmental Research: Health, Vol 1, Iss 3, p

    operations, emissions, and sociodemographic patterns of surrounding populations

    2023  Volume 035003

    Abstract: Background: Production of shale gas in the United States (US) increased more than 10-fold from 2008 to 2021, yielding greater quantities of hydrocarbon feedstocks and incentivizing expansion of petrochemical facilities. Steam crackers (SCs) convert ... ...

    Abstract Background: Production of shale gas in the United States (US) increased more than 10-fold from 2008 to 2021, yielding greater quantities of hydrocarbon feedstocks and incentivizing expansion of petrochemical facilities. Steam crackers (SCs) convert hydrocarbon feedstocks into ethylene and propylene (the building blocks of plastics), while releasing toxic chemicals and greenhouse gases (GHGs). Analyses of environmental health and justice impacts of SCs are limited. Methods: We described SC operations, locations, and emissions, and evaluated sociodemographic characteristics of populations residing near SCs to better understand potential public health hazards and inform future studies. We summarized and described industry-reported emissions from the US Environmental Protection Agency’s Toxic Release Inventory and GHG Reporting Program. We compared population characteristics of US Census block groups ⩽5 km and >5 km from a steam cracker-containing facility (SCF) within the same county. Results: We identified 32 SCFs across five US states, with most in Texas and Louisiana. Toxic chemicals with the greatest reported cumulative air emissions in 1987–2019 were: ethylene, propylene, hydrochloric acid, benzene, n-hexane, 1,3-butadiene, ammonia, toluene, vinyl acetate, and methanol. Reported total annual GHG emissions were 4% higher in 2019 versus 2010, with total GHG emissions of >650 million metric tons (carbon dioxide equivalents) in 2010–2019. We found that 752 465 people live in census block groups ⩽5 km from an SCF, regardless of county. Compared to block groups >5 km away within the same county, block groups closer to SCFs had statistically significantly lower median incomes ($54 843 vs $67 866) and more vacant housing (15% vs 11%), and higher proportions of residents who were non-Hispanic Black (31% vs 19%) and unemployed (8% vs 6%). Conclusion: SCs emit substantial amounts of GHGs and toxic chemicals in locations with historically disadvantaged populations. Future research could further evaluate the ...
    Keywords petrochemical ; unconventional oil and gas ; greenhouse gases ; air toxics ; environmental justice ; Environmental sciences ; GE1-350 ; Public aspects of medicine ; RA1-1270
    Subject code 333
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher IOP Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Shale gas activity and increased rates of sexually transmitted infections in Ohio, 2000-2016.

    Nicole C Deziel / Zoe Humeau / Elise G Elliott / Joshua L Warren / Linda M Niccolai

    PLoS ONE, Vol 13, Iss 3, p e

    2018  Volume 0194203

    Abstract: The growing shale gas ("fracking") industry depends on a mobile workforce, whose influx could have social impacts on host communities. Sexually transmitted infections (STIs) can increase through sexual mixing patterns associated with labor migration. No ... ...

    Abstract The growing shale gas ("fracking") industry depends on a mobile workforce, whose influx could have social impacts on host communities. Sexually transmitted infections (STIs) can increase through sexual mixing patterns associated with labor migration. No prior studies have quantified the relationship between shale gas activity and rates of three reportable STIs: chlamydia, gonorrhea, and syphilis.We conducted a longitudinal, ecologic study from 2000-2016 in Ohio, situated in a prolific shale gas region in the United States (US). Data on reported cases of chlamydia, gonorrhea, and syphilis by county and year were obtained from the Ohio Department of Health. All 88 counties were classified as none, low, and high shale gas activity in each year, using data from the Ohio Department of Natural Resources. Annual rate ratios (RR) and 95% confidence intervals (95% CIs) were calculated from mixed-effects Poisson regression models evaluating the relationship between shale gas activity and reported annual STI rates while adjusting for secular trends and potential confounders obtained from the US Census.Compared to counties with no shale gas activity, counties with high activity had 21% (RR = 1.21; 95%CI = 1.08-1.36) increased rates of chlamydia and 19% (RR = 1.27; 95%CI 0.98-1.44) increased rates of gonorrhea, respectively. No association was observed for syphilis.This first report of a link between shale gas activity and increased rates of both chlamydia and gonorrhea may inform local policies and community health efforts.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Phthalate Exposure from Drinking Water in Romanian Adolescents

    Rose O. Sulentic / Irina Dumitrascu / Nicole C. Deziel / Anca E. Gurzau

    International Journal of Environmental Research and Public Health, Vol 15, Iss 10, p

    2018  Volume 2109

    Abstract: Phthalates are plastic softeners that have been linked to several adverse health outcomes. The relative contributions of different sources to phthalate exposure in populations in different regions and at different life stages is unclear. We examined the ... ...

    Abstract Phthalates are plastic softeners that have been linked to several adverse health outcomes. The relative contributions of different sources to phthalate exposure in populations in different regions and at different life stages is unclear. We examined the relationships between water consumption, consumer product use, and phthalate exposure among 40 adolescents (20 males, 20 females) in Cluj-Napoca, Romania. Interviewers administered a questionnaire about drinking water consumption and use of phthalate-containing consumer products. Four common phthalates were measured in representative samples of participants’ municipal drinking water and consumed bottled water using gas chromatography-mass spectrometry. Urine samples were collected from participants and analyzed for the corresponding phthalate metabolites. Relationships between different exposure measures were assessed using nonparametric tests (Spearman rank correlation coefficients and the Kruskal–Wallis test). Diisobutyl phthalate, dibutyl phthalate, and bis(2-ethylhexyl) phthalate were commonly detected in bottled water, but generally not the municipal drinking water samples. Mono-n-butyl phthalate (MnBP) was the most commonly detected urinary metabolite (detected in 92.5% of participants) and had the highest maximum concentration (1139.77 µg/g creatinine). We did not identify any statistically significant associations between water consumption or consumer product use practices and urinary phthalate metabolite concentrations in our adolescent group, and directions of correlation coefficients differed by individual phthalate compound. While phthalate exposure was widespread, these results highlight the challenges in examining phthalate exposure determinants and emphasize the need for further investigation into understanding exposure sources and potential health risks from chronic low-level exposures.
    Keywords adolescents ; biomarkers ; phthalates ; Romania ; water exposure ; Medicine ; R
    Subject code 333
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Assessing Endogenous and Exogenous Hormone Exposures and Breast Development in a Migrant Study of Bangladeshi and British Girls

    Renata E. Howland / Nicole C. Deziel / Gillian R. Bentley / Mark Booth / Osul A. Choudhury / Jonathan N. Hofmann / Robert N. Hoover / Hormuzd A. Katki / Britton Trabert / Stephen D. Fox / Rebecca Troisi / Lauren C. Houghton

    International Journal of Environmental Research and Public Health, Vol 17, Iss 4, p

    2020  Volume 1185

    Abstract: Timing of breast development (or thelarche) and its endogenous and exogenous determinants may underlie global variation in breast cancer incidence. The study objectives were to characterize endogenous estrogen levels and bisphenol A (BPA) exposure using ... ...

    Abstract Timing of breast development (or thelarche) and its endogenous and exogenous determinants may underlie global variation in breast cancer incidence. The study objectives were to characterize endogenous estrogen levels and bisphenol A (BPA) exposure using a migrant study of adolescent girls and test whether concentrations explained differences in thelarche by birthplace and growth environment. Estrogen metabolites (EM) and BPA-glucuronide (BPA-G) were quantified in urine spot samples using liquid chromatography tandem mass spectrometry (LC-MS/MS) from a cross-sectional study of Bangladeshi, first- and second-generation Bangladeshi migrants to the UK, and white British girls aged 5−16 years ( n = 348). Thelarche status at the time of interview was self-reported and defined equivalent to Tanner Stage ≥2. We compared geometric means (and 95% confidence interval (CIs)) of EM and BPA-G using linear regression and assessed whether EM and BPA-G explained any of the association between exposure to the UK and the age at thelarche using hazard ratios and 95% confidence intervals. Average EM decreased with exposure to the UK, whereas BPA-G increased and was significantly higher among white British (0.007 ng/mL, 95% CI: 0.0024−0.0217) and second-generation British-Bangladeshi girls (0.009 ng/mL, 95% CI: 0.0040−0.0187) compared to Bangladeshi girls (0.002 ng/mL, 95% CI: 0.0018−0.0034). Two of four EM ratios (16-pathway/parent and parent/all pathways) were significantly associated with thelarche. The relationship between exposure to the UK and thelarche did not change appreciably after adding EM and BPA-G to the models. While BPA-G is often considered a ubiquitous exposure, our findings suggest it can vary based on birthplace and growth environment, with increasing levels for girls who were born in or moved to the UK. Our study did not provide statistically significant evidence that BPA-G or EM concentrations explained earlier thelarche among girls who were born or raised in the UK.
    Keywords cancer ; adolescents ; environmental exposure ; estrogen ; migrant study ; bpa ; Medicine ; R
    Subject code 333
    Language English
    Publishing date 2020-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article: Prioritization of reproductive toxicants in unconventional oil and gas operations using a multi-country regulatory data-driven hazard assessment

    Inayat-Hussain, Salmaan H / A. Muiz Aziz / Chai Meng Jin / Low Wei Jin / Masao Fukumura / Nicole C. Deziel / Rolando Garcia-Milian / Vasilis Vasiliou

    Environment international. 2018 Aug., v. 117

    2018  

    Abstract: Recent trends have witnessed the global growth of unconventional oil and gas (UOG) production. Epidemiologic studies have suggested associations between proximity to UOG operations with increased adverse birth outcomes and cancer, though specific ... ...

    Abstract Recent trends have witnessed the global growth of unconventional oil and gas (UOG) production. Epidemiologic studies have suggested associations between proximity to UOG operations with increased adverse birth outcomes and cancer, though specific potential etiologic agents have not yet been identified. To perform effective risk assessment of chemicals used in UOG production, the first step of hazard identification followed by prioritization specifically for reproductive toxicity, carcinogenicity and mutagenicity is crucial in an evidence-based risk assessment approach. To date, there is no single hazard classification list based on the United Nations Globally Harmonized System (GHS), with countries applying the GHS standards to generate their own chemical hazard classification lists. A current challenge for chemical prioritization, particularly for a multi-national industry, is inconsistent hazard classification which may result in misjudgment of the potential public health risks. We present a novel approach for hazard identification followed by prioritization of reproductive toxicants found in UOG operations using publicly available regulatory databases.GHS classification for reproductive toxicity of 157 UOG-related chemicals identified as potential reproductive or developmental toxicants in a previous publication was assessed using eleven governmental regulatory agency databases. If there was discordance in classifications across agencies, the most stringent classification was assigned. Chemicals in the category of known or presumed human reproductive toxicants were further evaluated for carcinogenicity and germ cell mutagenicity based on government classifications. A scoring system was utilized to assign numerical values for reproductive health, cancer and germ cell mutation hazard endpoints. Using a Cytoscape analysis, both qualitative and quantitative results were presented visually to readily identify high priority UOG chemicals with evidence of multiple adverse effects.We observed substantial inconsistencies in classification among the 11 databases. By adopting the most stringent classification within and across countries, 43 chemicals were classified as known or presumed human reproductive toxicants (GHS Category 1), while 31 chemicals were classified as suspected human reproductive toxicants (GHS Category 2). The 43 reproductive toxicants were further subjected to analysis for carcinogenic and mutagenic properties. Calculated hazard scores and Cytoscape visualization yielded several high priority chemicals including potassium dichromate, cadmium, benzene and ethylene oxide.Our findings reveal diverging GHS classification outcomes for UOG chemicals across regulatory agencies. Adoption of the most stringent classification with application of hazard scores provides a useful approach to prioritize reproductive toxicants in UOG and other industries for exposure assessments and selection of safer alternatives.
    Keywords benzene ; cadmium ; carcinogenicity ; chemical hazards ; databases ; epidemiological studies ; ethylene ; etiological agents ; germ cells ; hazard characterization ; hazard identification ; humans ; industry ; mutagenicity ; mutagens ; mutation ; neoplasms ; oils ; potassium ; pregnancy complications ; prioritization ; public health ; reproductive toxicology ; risk ; risk assessment process ; United Nations
    Language English
    Dates of publication 2018-08
    Size p. 348-358.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 554791-x
    ISSN 1873-6750 ; 0160-4120
    ISSN (online) 1873-6750
    ISSN 0160-4120
    DOI 10.1016/j.envint.2018.05.010
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Prioritization of reproductive toxicants in unconventional oil and gas operations using a multi-country regulatory data-driven hazard assessment

    Salmaan H. Inayat-Hussain / Masao Fukumura / A. Muiz Aziz / Chai Meng Jin / Low Wei Jin / Rolando Garcia-Milian / Vasilis Vasiliou / Nicole C. Deziel

    Environment International, Vol 117, Iss , Pp 348-

    2018  Volume 358

    Abstract: Background: Recent trends have witnessed the global growth of unconventional oil and gas (UOG) production. Epidemiologic studies have suggested associations between proximity to UOG operations with increased adverse birth outcomes and cancer, though ... ...

    Abstract Background: Recent trends have witnessed the global growth of unconventional oil and gas (UOG) production. Epidemiologic studies have suggested associations between proximity to UOG operations with increased adverse birth outcomes and cancer, though specific potential etiologic agents have not yet been identified. To perform effective risk assessment of chemicals used in UOG production, the first step of hazard identification followed by prioritization specifically for reproductive toxicity, carcinogenicity and mutagenicity is crucial in an evidence-based risk assessment approach. To date, there is no single hazard classification list based on the United Nations Globally Harmonized System (GHS), with countries applying the GHS standards to generate their own chemical hazard classification lists. A current challenge for chemical prioritization, particularly for a multi-national industry, is inconsistent hazard classification which may result in misjudgment of the potential public health risks. We present a novel approach for hazard identification followed by prioritization of reproductive toxicants found in UOG operations using publicly available regulatory databases. Methods: GHS classification for reproductive toxicity of 157 UOG-related chemicals identified as potential reproductive or developmental toxicants in a previous publication was assessed using eleven governmental regulatory agency databases. If there was discordance in classifications across agencies, the most stringent classification was assigned. Chemicals in the category of known or presumed human reproductive toxicants were further evaluated for carcinogenicity and germ cell mutagenicity based on government classifications. A scoring system was utilized to assign numerical values for reproductive health, cancer and germ cell mutation hazard endpoints. Using a Cytoscape analysis, both qualitative and quantitative results were presented visually to readily identify high priority UOG chemicals with evidence of multiple adverse effects. Results: We observed substantial inconsistencies in classification among the 11 databases. By adopting the most stringent classification within and across countries, 43 chemicals were classified as known or presumed human reproductive toxicants (GHS Category 1), while 31 chemicals were classified as suspected human reproductive toxicants (GHS Category 2). The 43 reproductive toxicants were further subjected to analysis for carcinogenic and mutagenic properties. Calculated hazard scores and Cytoscape visualization yielded several high priority chemicals including potassium dichromate, cadmium, benzene and ethylene oxide. Conclusions: Our findings reveal diverging GHS classification outcomes for UOG chemicals across regulatory agencies. Adoption of the most stringent classification with application of hazard scores provides a useful approach to prioritize reproductive toxicants in UOG and other industries for exposure assessments and selection of safer alternatives. Keywords: Chemical prioritization, Globally harmonized system, Regulatory list, Reproductive toxicants, Unconventional oil and gas
    Keywords Environmental sciences ; GE1-350
    Subject code 006
    Language English
    Publishing date 2018-08-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Beyond genomics

    Nicholas J. W. Rattray / Nicole C. Deziel / Joshua D. Wallach / Sajid A. Khan / Vasilis Vasiliou / John P. A. Ioannidis / Caroline H. Johnson

    Human Genomics, Vol 12, Iss 1, Pp 1-

    understanding exposotypes through metabolomics

    2018  Volume 14

    Abstract: Abstract Background Over the past 20 years, advances in genomic technology have enabled unparalleled access to the information contained within the human genome. However, the multiple genetic variants associated with various diseases typically account ... ...

    Abstract Abstract Background Over the past 20 years, advances in genomic technology have enabled unparalleled access to the information contained within the human genome. However, the multiple genetic variants associated with various diseases typically account for only a small fraction of the disease risk. This may be due to the multifactorial nature of disease mechanisms, the strong impact of the environment, and the complexity of gene-environment interactions. Metabolomics is the quantification of small molecules produced by metabolic processes within a biological sample. Metabolomics datasets contain a wealth of information that reflect the disease state and are consequent to both genetic variation and environment. Thus, metabolomics is being widely adopted for epidemiologic research to identify disease risk traits. In this review, we discuss the evolution and challenges of metabolomics in epidemiologic research, particularly for assessing environmental exposures and providing insights into gene-environment interactions, and mechanism of biological impact. Main text Metabolomics can be used to measure the complex global modulating effect that an exposure event has on an individual phenotype. Combining information derived from all levels of protein synthesis and subsequent enzymatic action on metabolite production can reveal the individual exposotype. We discuss some of the methodological and statistical challenges in dealing with this type of high-dimensional data, such as the impact of study design, analytical biases, and biological variance. We show examples of disease risk inference from metabolic traits using metabolome-wide association studies. We also evaluate how these studies may drive precision medicine approaches, and pharmacogenomics, which have up to now been inefficient. Finally, we discuss how to promote transparency and open science to improve reproducibility and credibility in metabolomics. Conclusions Comparison of exposotypes at the human population level may help understanding how environmental ...
    Keywords Chemometrics ; Exposome ; Exposotype ; Genomics ; Genetic epidemiology ; Metabolomics ; Medicine ; R ; Genetics ; QH426-470
    Subject code 612 ; 306
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Feasibility and informative value of environmental sample collection in the National Children's Vanguard Study

    Barksdale Boyle, Elizabeth / Bonny L. Specker / Clifford P. Weisel / David J. Wright / Michael Dellarco / Nicole C. Deziel / Scott Collingwood

    Environmental Research. 2015 July, v. 140

    2015  

    Abstract: Birth cohort studies provide the opportunity to advance understanding of the impact of environmental factors on childhood health and development through prospective collection of environmental samples.We evaluated the feasibility and informative value of ...

    Abstract Birth cohort studies provide the opportunity to advance understanding of the impact of environmental factors on childhood health and development through prospective collection of environmental samples.We evaluated the feasibility and informative value of the environmental sample collection methodology in the initial pilot phase of the National Children's Study, a planned U.S. environmental birth cohort study. Environmental samples were collected from January 2009–September 2010 at up to three home visits: pre-pregnancy (n=306), pregnancy (n=807), and 6-months postnatal (n=117). Collections included air for particulate matter ≤2.5µm (PM2.5), nitrogen dioxide, ozone, volatile organic compounds (VOCs), and carbonyls; vacuum dust for allergens/endotoxin; water for VOCs, trihalomethanes (THMs), and haloacetic acids (HAAs); and wipe samples for pesticides, semi-volatile organics, and metals. We characterized feasibility using sample collection rates and times and informative value using analyte detection frequencies (DF).Among the 1230 home visits, environmental sample collection rates were high across all sample types (mean=89%); all samples except the air PM2.5 samples had collection times <30min. Informative value was low for water VOCs (median DF=0%) and pesticide floor wipes (median DF=5%). Informative value was moderate for air samples (median DF=35%) and high for water THMs and HAAs (median DF=91% and 75%, respectively).Though collection of environmental samples was feasible, some samples (e.g., wipe pesticides and water VOCs) yielded limited information. These results can be used in conjunction with other study design considerations, such as target population size and hypotheses of interest, to inform the method selection of future environmental health birth cohort studies.
    Keywords air ; allergens ; childhood ; children ; cohort studies ; dust ; endotoxins ; environmental factors ; environmental health ; environmental impact ; experimental design ; haloacetic acids ; metals ; nitrogen dioxide ; ozone ; particulates ; pesticides ; population size ; pregnancy ; sampling ; volatile organic compounds ; United States
    Language English
    Dates of publication 2015-07
    Size p. 345-353.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2015.04.006
    Database NAL-Catalogue (AGRICOLA)

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