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  1. Article ; Online: The Effectiveness of Traditional Chinese Medicine (TCM) as an Adjunct Treatment on Stable COPD Patients

    K. H. Chan / Y. Y. S. Tsoi / M. McCall

    Evidence-Based Complementary and Alternative Medicine, Vol

    A Systematic Review and Meta-Analysis

    2021  Volume 2021

    Abstract: Background. Traditional Chinese medicine (TCM), including Chinese herbal medicine (CHM) and acupuncture, exhibits beneficial effects on stable chronic obstructive pulmonary disease (COPD) such as improving lung function and reducing exacerbation. ... ...

    Abstract Background. Traditional Chinese medicine (TCM), including Chinese herbal medicine (CHM) and acupuncture, exhibits beneficial effects on stable chronic obstructive pulmonary disease (COPD) such as improving lung function and reducing exacerbation. Previous research studies have examined either CHM or acupuncture alone, which are not the usual practice in TCM clinic setting. We conduct a systematic review for evaluating the clinical effectiveness and safety of TCM by combining CHM and acupuncture. Methods. Databases are searched from inception to November 2019. Randomized controlled trials examining either acupuncture or CHM on stable COPD are included. Primary outcomes include lung functions, exacerbations, and COPD assessment test. Secondary outcomes include quality of life, TCM syndrome score and effective rate, and 6-minute walk distance. Two independent reviewers extract data and assess the quality of evidence and generate meta-analysis and risk of bias by STATA. This protocol follows the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) guidelines. Results. 100 randomized controlled trials (8291 participants) were included to compare add-on Chinese medicine treatment with conventional treatment (CT). Combining CHM with CT improves FEV1 (MD: 0.18, 95% CI: 0.08, 0.28), exacerbation rate (MD: −0.29, 95% CI: −0.61, 0.03), COPD assessment test (MD: −2.16, 95% CI: −3.44, -0.88), TCM syndrome score (MD: −3.96, 95% CI: −5.41, −2.51) and effective rate (RR: 0.89, 95% CI: 0.80, 0.93), and 6-minute walk test (MD: 37.81, 95% CI: 20.90, 54.73). No serious adverse events were reported. Risk of bias: low to unclear. Conclusions. This review identifies sufficient moderate-to-low-quality evidence to suggest TCM as an adjunct treatment for stable COPD patients. Though heterogeneity was low among studies, the results were limited and the quality of evidence was low or very low based on small sample sizes and risk of bias. Future studies with larger sample sizes are warranted. The trial is ...
    Keywords Other systems of medicine ; RZ201-999
    Subject code 610
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Mapping the Sharing Economy in China

    Chan Liu / Raymond K H Chan / Maofu Wang / Zhe Yang

    Sustainability, Vol 12, Iss 6333, p

    2020  Volume 6333

    Abstract: Harnessing the rapid development of mobile internet technology, the sharing economy has experienced unprecedented growth in the global economy, especially in China. Likely due to its increasing popularity, more and more businesses have adopted this label ...

    Abstract Harnessing the rapid development of mobile internet technology, the sharing economy has experienced unprecedented growth in the global economy, especially in China. Likely due to its increasing popularity, more and more businesses have adopted this label in China. There is a concern as to the essential meaning of the sharing economy. As it is difficult to have a universally accepted definition, we aim to map the sharing economy and demystify the use of it in China in this paper. We propose seven organizing essential elements of the sharing economy: access use rights instead of ownership, idle capacity, short term, peer-to-peer, Internet platforms mediated, for monetary profit, and shared value orientation. By satisfying all or only parts of these elements, we propose one typology of sharing economy, and to differentiate bona fide sharing economy from quasi- and pseudo-sharing economy. Finally, there are still many problems that need to be solved urgently in the real sharing economy from the perspective of the government, companies and individuals.
    Keywords sharing economy ; sharing ; typologies ; China ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 950
    Language English
    Publishing date 2020-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Development of patient- and observer-reported outcome measures to assess COVID-19 signs and symptoms in children and adolescents

    Carla Romano / Margaret Mayorga / Javier Ruiz-Guiñazú / Géralyn C. Trudel / Sheri Fehnel / Kelly McQuarrie / Eric K. H. Chan / Eva G. Katz

    Journal of Patient-Reported Outcomes, Vol 7, Iss 1, Pp 1-

    2023  Volume 9

    Abstract: Abstract Background The Symptoms of Infection with Coronavirus-19 (SIC) is a 30-item patient-reported outcome measure to evaluate the presence and severity of COVID-19 signs/symptoms in adults. This study expanded the context of use of the adult SIC ... ...

    Abstract Abstract Background The Symptoms of Infection with Coronavirus-19 (SIC) is a 30-item patient-reported outcome measure to evaluate the presence and severity of COVID-19 signs/symptoms in adults. This study expanded the context of use of the adult SIC among adolescents aged 12–17 years and supported a pediatric adaptation (the Pediatric SIC [PedSIC]) for caregiver assessment of signs/symptoms in children aged < 12 years. Methods Draft versions of the PedSIC and reference materials containing sign/symptom definitions for adolescents, based on an assessment of the reading level of SIC items by a professional linguist, were developed to facilitate accurate completion of the SIC by adolescents and observer-report (PedSIC) by caregivers. For adolescents, reference materials were intended to provide definitions for selected signs/symptoms identified to have a higher reading level. Iterative rounds of cognitive debriefing interviews were conducted from November 2020 to January 2021 to evaluate adolescent understanding of the SIC reference materials and inform refinement of the PedSIC for caregivers of children too young to reliably self-report. Participants were identified via databases of individuals who previously expressed interest in participating in qualitative research and were then screened for eligibility. Recruitment quotas were established to improve sample diversity. Thematic analysis and descriptive statistics were used to assess qualitative and demographic data, respectively. Results Nine healthy adolescents (mean [SD, range] age, 14 [1.76, 12–17] years, 56% female, 22% non-White; round 1, n = 6; round 2, n = 3) and 17 caregivers (mean [SD, range] age, 34 [6.28, 26–41] years, 59% female, 35% non-White; round 1, n = 9; round 2, n = 8) were interviewed. Adolescents understood the majority of signs/symptoms (22 of the 30 SIC items) without assistance or use of the reference materials during the cognitive debriefing interview. Definitions were added to the reference materials for 5 additional items, and ...
    Keywords Patient-reported outcome ; Observer-reported outcome ; COVID-19 ; Content validity ; Pediatric ; Adolescent ; Public aspects of medicine ; RA1-1270
    Subject code 150
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher SpringerOpen
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Evaluation of symptoms in respiratory syncytial virus infection in adults

    Richard H. Osborne / Lauren M. Nelson / Sheri Fehnel / Nicole Williams / Randall H. Bender / Ryan Ziemiecki / Efi Gymnopoulou / Els De Paepe / Yannick Vandendijck / Lindsey Norcross / Esther Heijnen / Gabriela Ispas / Christy Comeaux / Benoit Callendret / Eric K. H. Chan / Jane A. Scott

    Journal of Patient-Reported Outcomes, Vol 7, Iss 1, Pp 1-

    psychometric evaluation of the Respiratory Infection Intensity and Impact Questionnaire™ symptom scores

    2023  Volume 10

    Abstract: Abstract Background The Respiratory Infection Intensity and Impact Questionnaire (RiiQ™) is a patient-reported outcome measure designed to assess symptoms and impacts of respiratory syncytial virus (RSV) infection. This study evaluated the construct ... ...

    Abstract Abstract Background The Respiratory Infection Intensity and Impact Questionnaire (RiiQ™) is a patient-reported outcome measure designed to assess symptoms and impacts of respiratory syncytial virus (RSV) infection. This study evaluated the construct validity, reliability, and responsiveness of the RiiQ™ Respiratory and Systemic Symptoms Scale scores. Methods Prospective data were analyzed from a total of 1795 participants, including from non-hospitalized patients with acute respiratory infection (ARI) and no coinfections enrolled in a Phase 2b RSV vaccine study (RSV-positive: n = 60; RSV-negative: n = 1615), and two observational studies of patients hospitalized with RSV (n = 20; n = 100). Descriptive statistics, confirmatory factor analysis (CFA), test–retest intraclass correlation coefficients (ICCs), construct validity correlations (between a clinician-assessed clinical questionnaire and the RiiQ™ symptoms scale), known-groups validity, and responsiveness (correlations of change scores) were evaluated. Results Mean patient age ranged from 66.5 to 71.5 years and the majority of patients were female. Initial assessments in the vaccine trial (ARI Day 1) were suggestive of less severe illness than in the observational studies with hospitalized patients. CFA loadings (> 0.40) supported summary scores. ICCs exceeding the recommended threshold of 0.70 supported test–retest reliability for Respiratory and Systemic Symptoms, except in the small observational study. At the scale level, correlations were moderate to strong (|r| ≥ 0.3) and positive between the Respiratory Symptoms Scale and the related clinical questionnaire scores, reflecting measurement of similar symptoms in support of convergent validity. Correlations with change in Patient Global Impression of Severity > 0.30 supported responsiveness. Conclusions Psychometric tests applied to the RiiQ™ Symptoms scales provide evidence of its reliability, construct validity, discriminating ability, and responsiveness for use in clinical studies to assess the ...
    Keywords RiiQ™ ; Respiratory syncytial virus ; Validation ; Psychometric ; Patient-reported outcome ; Public aspects of medicine ; RA1-1270
    Subject code 310 ; 150
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher SpringerOpen
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Development of a novel patient-reported outcome measure to assess signs and symptoms of COVID-19

    Carla Romano / Sheri Fehnel / Jeffrey Stoddard / Jerald Sadoff / Sandy Lewis / Pauline McNulty / Eric K. H. Chan / Emily Evans / Carol Jamieson / Ashley F. Slagle / Allen Mangel / Kelly McQuarrie

    Journal of Patient-Reported Outcomes, Vol 6, Iss 1, Pp 1-

    2022  Volume 12

    Abstract: Abstract Background Given the urgent need for vaccines and treatments for coronavirus disease 2019 (COVID-19), the Symptoms of Infection with Coronavirus-19 (SIC), a comprehensive, patient-reported outcome (PRO) measure of signs and symptoms associated ... ...

    Abstract Abstract Background Given the urgent need for vaccines and treatments for coronavirus disease 2019 (COVID-19), the Symptoms of Infection with Coronavirus-19 (SIC), a comprehensive, patient-reported outcome (PRO) measure of signs and symptoms associated with COVID-19, was developed in full alignment with current US regulatory guidance to support evaluations of vaccines and treatments in development. Methods An initial version of the SIC was developed to address concepts identified through a targeted literature review and consultation with experts in infectious diseases and clinicians routinely managing COVID-19 in a hospital setting. A qualitative study was conducted in sites in the United States among 31 participants aged ≥ 18 years who were English-speaking and willing and able to provide informed consent and a self-reported history by telephone or online method. The measure was refined based on additional feedback from the clinicians and three iterative rounds of combined concept elicitation and cognitive debriefing interviews conducted with patients, caregivers, and healthy volunteers. Results Among 39 scientific articles identified in the literature review, 35 COVID-19 signs and symptoms were reported and confirmed during interviews with clinicians, patients, and caregivers. Patients and healthy participants suggested changes for refining the draft SIC to ensure consistent interpretation and endorsed both the 24-h recall period and use of an 11-point numeric rating scale (NRS) for capturing change in symptom severity. The final version of the SIC captures the daily presence or absence of 30 symptoms and a rating of severity for 25 of the 30 symptoms using an NRS for those symptoms reported as present. Conclusions The SIC comprehensively addresses observations described in the literature, by clinicians, and by patients, and captures patients’ experiences with COVID-19 in a manner that minimizes complexity and facilitates completion for both patients and healthy volunteers. This measure is thus appropriate for ...
    Keywords Patient-reported outcome ; COVID-19 ; Content validity ; Signs and symptoms ; Patient experience ; Public aspects of medicine ; RA1-1270
    Subject code 150
    Language English
    Publishing date 2022-07-01T00:00:00Z
    Publisher SpringerOpen
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Impaired cerebral blood flow in type 2 diabetes mellitus – A comparative study with subjective cognitive decline, vascular dementia and Alzheimer’s disease subjects

    Anson C.M. Chau / Eva Y.W. Cheung / K.H. Chan / W.S. Chow / Y.F. Shea / Patrick K.C. Chiu / Henry K.F. Mak

    NeuroImage: Clinical, Vol 27, Iss , Pp 102302- (2020)

    2020  

    Abstract: The link between non-demented type 2 diabetes mellitus (T2DM) and different types of cognitive impairment is controversial. By controlling for co-morbidities such as cerebral macrovascular and microvascular changes, cerebral atrophy, amyloid burden, ... ...

    Abstract The link between non-demented type 2 diabetes mellitus (T2DM) and different types of cognitive impairment is controversial. By controlling for co-morbidities such as cerebral macrovascular and microvascular changes, cerebral atrophy, amyloid burden, hypertension or hyperlipidemia, the current study investigated the cerebral blood flow of T2DM individuals as compared to cognitively impaired subjects recruited from a memory clinic.15 healthy control (71.8 ± 6.1 years), 18 T2DM (62.5 ± 3.7 years), as well as 8 Subjective Cognitive Decline (69.5 ± 7.5 years), 12 Vascular Dementia (79.3 ± 4.2 years) and 17 Alzheimer’s Disease (75.1 ± 8.2 years) underwent multi-parametric MRI brain scanning. Subjects with T2DM and from the memory clinic also had 18-F Flutametamol PET-CT scanning to look for any amyloid burden. Pseudocontinuous Arterial Spin Labeling (PCASL), MR Angiography Head, 3D FLAIR and 3D T1-weighted sequences were used to quantify cerebral blood flow, cerebrovascular changes, white matter hyperintensities and brain atrophy respectively. Vascular risk factors were retrieved from the medical records. The 37 subjects from memory clinic were classified into subjective cognitive decline (SCD), vascular dementia (VD) and Alzheimer’s disease (AD) subgroups by a multi-disciplinary panel consisting of a neuroradiologist, and 2 geriatricians.Absolute cortical CBF in our cohort of T2DM, SCD, VD and AD was significantly decreased (p < 0.01) as compared to healthy controls (HC) in both whole brain and eight paired brain regions, after age, normalized grey matter volume and gender adjustment and Bonferroni correction.Subgroup analysis between T2DM, SCD, VD, and AD revealed that CBF of T2DM was not significantly different from AD, VD or SCD. By controlling for co-morbidities, impaired cortical CBF in T2DM was not related to microangiopathy or amyloid deposition, but to the interaction of triple risk factors (such as diabetes mellitus, hypertension, and hyperlipidemia).There was statistically significant negative ...
    Keywords Type 2 diabetes mellitus ; Cerebral blood flow ; Arterial spin labeling ; Subjective cognitive decline ; Dementia ; Cerebral autoregulation ; Computer applications to medicine. Medical informatics ; R858-859.7 ; Neurology. Diseases of the nervous system ; RC346-429
    Subject code 610
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Palliative Liver Radiotherapy (RT) for Symptomatic Hepatocellular Carcinoma (HCC)

    Cynthia S. Y. Yeung / C. L. Chiang / Natalie S. M. Wong / S. K. Ha / K. S. Tsang / Connie H. M. Ho / B. Wang / Venus W. Y. Lee / Mark K. H. Chan / Francis A. S. Lee

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    2020  Volume 10

    Abstract: Abstract This study aims at evaluating the symptom response, response duration, and toxicity of single dose palliative liver radiotherapy (RT) for symptomatic HCC patients. We reviewed unresectable HCC patients treated with palliative RT in our ... ...

    Abstract Abstract This study aims at evaluating the symptom response, response duration, and toxicity of single dose palliative liver radiotherapy (RT) for symptomatic HCC patients. We reviewed unresectable HCC patients treated with palliative RT in our institution. Eligible patients were unsuitable or refractory to trans-arterial chemoembolization (TACE) and stereotactic body radiotherapy (SBRT), with an index symptom of pain or abdominal discomfort. The primary outcome was the percentage of patients with clinical improvement of index symptom at 1 month. Secondary outcomes were response duration, toxicities, alpha-feto protein (AFP) response, and radiological response. Fifty-two patients were included in the study. The index symptom was pain in 34 patients (65.4%), and abdominal discomfort (34.6%) in 18 patients. At 1 month, 51.9% of patients had improvement of symptoms. Median time to symptom progression was 89 days (range: 12–392 days). Treatment was well tolerated with only 2 patients (3.8%) developing grade 3 GI toxicities. AFP response, radiological response rate, and disease control rate at 3 months were 48.6%, 15.1%, and 54.5% respectively. Half of the patients had improvement of index symptoms after receiving palliative liver RT with median response duration of 3 months. The treatment was well tolerated with minimal toxicities.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: High Prevalence of Late-Onset Fabry Cardiomyopathy in a Cohort of 499 Non-Selective Patients with Left Ventricular Hypertrophy

    Yiting Fan / Tsz-Ngai Chan / Josie T. Y. Chow / Kevin K. H. Kam / Wai-Kin Chi / Joseph Y. S. Chan / Erik Fung / Mabel M. P. Tong / Jeffery K. T. Wong / Paul C. L. Choi / David K. H. Chan / Bun Sheng / Alex Pui-Wai Lee

    Journal of Clinical Medicine, Vol 10, Iss 2160, p

    The Asian Fabry Cardiomyopathy High-Risk Screening Study (ASIAN-FAME)

    2021  Volume 2160

    Abstract: Left ventricular hypertrophy (LVH) caused by cardiac variant Fabry disease (FD) is typically late-onset and may mimic LVH caused by abnormal loading conditions. We aimed to determine the prevalence of FD in a non-selective patient population of everyday ... ...

    Abstract Left ventricular hypertrophy (LVH) caused by cardiac variant Fabry disease (FD) is typically late-onset and may mimic LVH caused by abnormal loading conditions. We aimed to determine the prevalence of FD in a non-selective patient population of everyday practice presenting with LVH, including those with hypertension and valve disease. We measured plasma alpha-galactosidase A activity using dried blood spot tests in 499 (age = 66 ± 13 years; 336 men) Hong Kong Chinese patients with LVH defined as maximal LV septal/posterior wall thickness ≥13 mm on echocardiography. Patients with low enzyme activity underwent mutation analysis of the GLA gene. Eight (age = 53−74 years; all men) unrelated patients (1.6%) had low plasma alpha-galactosidase A activity (0.57 ± 0.27 μmol/L wb/hr) and all were confirmed to have the GLA IVS4 + 919G > A mutation. FD patients presented with heart failure ( n = 5), heart block ( n = 2), ventricular tachycardia ( n = 1), chest pain ( n = 3), and/or murmur ( n = 1). Uncontrolled hypertension ( n = 4) and/or severe mitral/aortic valve pathology ( n = 2) were frequent. Ethnic subgroups included Teochew ( n = 5), Canton ( n = 2), and Wenzhou ( n = 1). Endomyocardial biopsy ( n = 6) revealed hypertrophic myocytes with vacuolization and dense lamellar bodies. Late-onset IVS4 + 919G > A FD is prevalent among Chinese LVH patients, and should be considered as a cause of LVH in adult patients even when hypertension and/or valve pathology are present.
    Keywords fabry disease ; left ventricular hypertrophy ; IVS4 + 919G > A mutation ; dried blood spot test ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Screening for Fabry Disease in patients with unexplained left ventricular hypertrophy.

    Chandu Sadasivan / Josie T Y Chow / Bun Sheng / David K H Chan / Yiting Fan / Paul C L Choi / Jeffrey K T Wong / Mabel M B Tong / Tsz-Ngai Chan / Erik Fung / Kevin K H Kam / Joseph Y S Chan / Wai-Kin Chi / D Ian Paterson / Manohara Senaratne / Neil Brass / Gavin Y Oudit / Alex P W Lee

    PLoS ONE, Vol 15, Iss 9, p e

    2020  Volume 0239675

    Abstract: Fabry Disease (FD) is a systemic disorder that can result in cardiovascular, renal, and neurovascular disease leading to reduced life expectancy. FD should be considered in the differential of all patients with unexplained left ventricular hypertrophy ( ... ...

    Abstract Fabry Disease (FD) is a systemic disorder that can result in cardiovascular, renal, and neurovascular disease leading to reduced life expectancy. FD should be considered in the differential of all patients with unexplained left ventricular hypertrophy (LVH). We therefore performed a prospective screening study in Edmonton and Hong Kong using Dried Blood Spot (DBS) testing on patients with undiagnosed LVH. Participants found to have unexplained LVH on echocardiography were invited to participate and subsequently subjected to DBS testing. DBS testing was used to measure α-galactosidase (α-GAL) enzyme activity and for mutation analysis of the α-galactosidase (GLA) gene, both of which are required to make a diagnosis of FD. DBS testing was performed as a screening tool on patients (n = 266) in Edmonton and Hong Kong, allowing for detection of five patients with FD (2% prevalence of FD) and one patient with hydroxychloroquine-induced phenocopy. Left ventricular mass index (LVMI) by GLA genotype showed a higher LVMI in patients with IVS4 + 919G > A mutations compared to those without the mutation. Two patients were initiated on ERT and hydroxychloroquine was discontinued in the patient with a phenocopy of FD. Overall, we detected FD in 2% of our screening cohort using DBS testing as an effective and easy to administer screening tool in patients with unexplained LVH. Utilizing DBS testing to screen for FD in patients with otherwise undiagnosed LVH is clinically important due to the availability of effective therapies and the value of cascade screening in extended families.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: The Effects of Temperature and Relative Humidity on the Viability of the SARS Coronavirus

    K. H. Chan / J. S. Malik Peiris / S. Y. Lam / L. L. M. Poon / K. Y. Yuen / W. H. Seto

    Advances in Virology , Vol

    2011  Volume 2011

    Keywords Microbiology ; QR1-502 ; Science ; Q ; DOAJ:Microbiology ; DOAJ:Biology ; DOAJ:Biology and Life Sciences
    Language English
    Publishing date 2011-01-01T00:00:00Z
    Publisher Hindawi Publishing Corporation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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