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  1. Article: A wie Arzt und A wie Autor - Interview mit Jens Petersen

    Treusch / Petersen, Jens

    Bayerisches Ärzteblatt

    2006  Volume 61, Issue 7-8, Page(s) 374

    Language German
    Document type Article
    ZDB-ID 219489-2
    ISSN 0005-7126
    Database Current Contents Medicine

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  2. Article ; Online: Surgical-Site Infection is Associated With Increased Risk of Breast Cancer-Related Lymphedema: A Nationwide Cohort Study.

    Jørgensen, Mads G / Gözeri, Ebru / Petersen, Tanja G / Sørensen, Jens A

    Clinical breast cancer

    2023  Volume 23, Issue 5, Page(s) e296–e304.e2

    Abstract: Background: Surgical-site infection (SSI) is one of the most common short-term complications following breast cancer treatment and can inhibit lymphatic drainage. It is currently not known whether SSI increases the risk of long-term breast cancer- ... ...

    Abstract Background: Surgical-site infection (SSI) is one of the most common short-term complications following breast cancer treatment and can inhibit lymphatic drainage. It is currently not known whether SSI increases the risk of long-term breast cancer-related lymphedema (BCRL). Thus, the objective of this study was to examine the association between surgical-site infection and the risk of BCRL METHODS: This nationwide study identified all patients treated for unilateral, primary invasive, nonmetastatic breast cancer in Denmark between January 1, 2007, and December 31, 2016 (n = 37,937). A redemption of antibiotics after breast cancer treatment was used as a disease proxy for SSI, included as a time-varying exposure. The risk of BCRL was analyzed up to 3 years after breast cancer treatment using multivariate Cox regression and adjusted for cancer treatment, demographics, comorbidities, and socioeconomic variables.
    Results: There were 10,368 (27.33%) patients with a SSI and 27,569 (72.67%) without a SSI (incidence rate per 100 patients, 33.10 (95%CI, 32.47-33.75). The BCRL incidence rate per 100 person-years for patients with SSI was 6.72 (95%CI: 6.41-7.05) and 4.86 (95%CI: 4.70-5.02) for patients without an SSI. There was an overall significant increased risk of BCRL in patients with an SSI (adjusted HR, 1.11; 95%CI: 1.04-1.17), with the highest risk 3 years after breast cancer treatment (adjusted HR, 1.28; 95%CI: 1.08-1.51) CONCLUSION: This large nationwide cohort study showed that SSI was associated with an overall 10% increased risk of BCRL. These findings may be used to identify patients at high risk of BCRL that would benefit from enhanced BCRL surveillance.
    MeSH term(s) Humans ; Female ; Cohort Studies ; Breast Neoplasms/complications ; Breast Neoplasms/surgery ; Lymphedema/epidemiology ; Lymphedema/etiology ; Breast Cancer Lymphedema/epidemiology ; Breast Cancer Lymphedema/etiology ; Surgical Wound Infection/epidemiology ; Surgical Wound Infection/etiology ; Lymph Node Excision/adverse effects
    Language English
    Publishing date 2023-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2106734-X
    ISSN 1938-0666 ; 1526-8209
    ISSN (online) 1938-0666
    ISSN 1526-8209
    DOI 10.1016/j.clbc.2023.03.016
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: British surname origins, population structure and health outcomes-an observational study of hospital admissions.

    Petersen, Jakob / Kandt, Jens / Longley, Paul A

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 2156

    Abstract: Population structure is a confounder on pathways linking genotypes to health outcomes. This study examines whether the historical, geographical origins of British surnames are associated with health outcomes today. We coded hospital admissions of over 30 ...

    Abstract Population structure is a confounder on pathways linking genotypes to health outcomes. This study examines whether the historical, geographical origins of British surnames are associated with health outcomes today. We coded hospital admissions of over 30 million patients in England between 1999 and 2013 to their British surname origin and divided their diagnoses into 125 major disease categories (of which 94 were complete-case). A base population was constructed with patients' first admission of any kind. Age- and sex-standardised odds ratios were calculated with logistic regression using patients with ubiquitous English surnames such as "Smith" as reference (alpha = .05; Benjamini-Hochberg false discovery rate (FDR) = .05). The results were scanned for "signals", where a branch of related surname origins all had significantly higher or lower risk. Age- and sex-standardised admission (alpha = .05) was calculated for each signal across area deprivation and surname origin density quintiles. Signals included three branches of English surnames (disorders of teeth and jaw, fractures, upper gastrointestinal disorders). Although the signal with fractures was considered unusual overall, 2 out of the 9 origins in the branch would only be significant at a FDR > .05: OR 0.92 (95% confidence interval 0.86-0.98) and 0.70 (0.55-0.90). The risk was only different in the quintile with the highest density of that group. Differential risk remained when studied across quintiles of area deprivation. The study shows that surname origins are associated with diverse health outcomes and thus act as markers of population structure over and above area deprivation.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; England ; Female ; Fractures, Bone ; Gastrointestinal Diseases ; Geography ; Health Status ; Hospitalization ; Humans ; Jaw Diseases ; Male ; Middle Aged ; Names ; Outcome Assessment, Health Care ; Socioeconomic Factors ; Tooth Diseases ; Young Adult
    Language English
    Publishing date 2022-02-09
    Publishing country England
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-05651-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: British surname origins, population structure and health outcomes—an observational study of hospital admissions

    Jakob Petersen / Jens Kandt / Paul A. Longley

    Scientific Reports, Vol 12, Iss 1, Pp 1-

    2022  Volume 8

    Abstract: Abstract Population structure is a confounder on pathways linking genotypes to health outcomes. This study examines whether the historical, geographical origins of British surnames are associated with health outcomes today. We coded hospital admissions ... ...

    Abstract Abstract Population structure is a confounder on pathways linking genotypes to health outcomes. This study examines whether the historical, geographical origins of British surnames are associated with health outcomes today. We coded hospital admissions of over 30 million patients in England between 1999 and 2013 to their British surname origin and divided their diagnoses into 125 major disease categories (of which 94 were complete-case). A base population was constructed with patients’ first admission of any kind. Age- and sex-standardised odds ratios were calculated with logistic regression using patients with ubiquitous English surnames such as “Smith” as reference (alpha = .05; Benjamini–Hochberg false discovery rate (FDR) = .05). The results were scanned for “signals”, where a branch of related surname origins all had significantly higher or lower risk. Age- and sex-standardised admission (alpha = .05) was calculated for each signal across area deprivation and surname origin density quintiles. Signals included three branches of English surnames (disorders of teeth and jaw, fractures, upper gastrointestinal disorders). Although the signal with fractures was considered unusual overall, 2 out of the 9 origins in the branch would only be significant at a FDR > .05: OR 0.92 (95% confidence interval 0.86–0.98) and 0.70 (0.55–0.90). The risk was only different in the quintile with the highest density of that group. Differential risk remained when studied across quintiles of area deprivation. The study shows that surname origins are associated with diverse health outcomes and thus act as markers of population structure over and above area deprivation.
    Keywords Medicine ; R ; Science ; Q
    Subject code 360
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Condylar motion analysis: a controlled, blinded clinical study on the interindividual reproducibility of standardized evaluation of computer-recorded condylar movements.

    Ahlers, M Oliver / Petersen, Tim / Katzer, Lukasz / Jakstat, Holger A / Roehl, Jakob C / Türp, Jens C

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 11721

    Abstract: The present study investigated to what extent a systematic evaluation of electronic condylar motion recordings leads to reproducible results in different examiners. The study was based on the anonymized condylar motion recordings of 20 patients (Cadiax ... ...

    Abstract The present study investigated to what extent a systematic evaluation of electronic condylar motion recordings leads to reproducible results in different examiners. The study was based on the anonymized condylar motion recordings of 20 patients (Cadiax compact II system). These were recruited consecutively from the examinations in a center specializing in diagnosing and managing temporomandibular disorders (TMD). Four trained practitioners independently evaluated the identical movement recordings of all patients after calibration. The evaluation was based on the previously published evaluation system. The results were recorded digitally in a database. The findings were then compared, and the matching values were determined (Fleiss' Kappa). The evaluation, according to Fleiss' Kappa, showed that the consistency of the assessment of the findings among the examiners is excellent (mean value 0.88, p < 0.00001). The study shows that calibrated dentists achieved reproducible results using this evaluation system and computer-assisted reporting. Good reproducibility confirms the reliability of systematic evaluation of clinical motion analysis. The ambiguities uncovered and eliminated in the study should avoid misunderstandings in the future. Both factors establish the prerequisites for applying condylar motion analysis in clinical practice.
    MeSH term(s) Humans ; Mandibular Condyle ; Reproducibility of Results ; Temporomandibular Joint Disorders/diagnosis ; Movement ; Computers ; Temporomandibular Joint
    Language English
    Publishing date 2023-07-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-37139-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Ethnic inequalities in hospital admissions in England: an observational study.

    Petersen, Jakob / Kandt, Jens / Longley, Paul A

    BMC public health

    2021  Volume 21, Issue 1, Page(s) 862

    Abstract: Background: Ethnic inequalities in health are well-known and partly explained by social determinants such as poorer living and working conditions, health behaviours, discrimination, social exclusion, and healthcare accessibility factors. Inequalities ... ...

    Abstract Background: Ethnic inequalities in health are well-known and partly explained by social determinants such as poorer living and working conditions, health behaviours, discrimination, social exclusion, and healthcare accessibility factors. Inequalities are known both for self-reported health and for diseases such as diabetes, cardiovascular diseases, respiratory diseases, and non-specific chest pains. Most studies however concern individual diseases or self-reported health and do not provide an overview that can detect gaps in existing knowledge. The aim of this study is thus to identify ethnic inequalities in inpatient hospital admission for all major disease categories in England.
    Methods: Observational study of the inpatient hospital admission database in England enhanced with ethnicity coding of participants' surnames. The primary diagnosis was coded to Level 1 of the Global Burden of Disease groups. For each year, only the first admission for each condition for each participant was included. If a participant was readmitted within two days only the first admission was counted. Admission risk for all major disease groups for each ethnic group relative to the White British group were calculated using logistic regression adjusting for age and area deprivation.
    Results: 40,928,105 admissions were identified between April 2009 and March 2014. Ethnic inequalities were found in cardiovascular diseases, respiratory diseases, chest pain, and diabetes in line with previous studies. Additional inequalities were found in nutritional deficiencies, endocrine disorders, and sense organ diseases.
    Conclusions: The results of this study were consistent with known inequalities, but also found previously unreported disparities in nutritional deficiencies, endocrine disorders, and sense organ diseases. Further studies would be required to map out the relevant care pathways for ethnic minorities and establish whether preventive measures can be strengthened.
    MeSH term(s) England/epidemiology ; Ethnic Groups ; Health Status Disparities ; Hospitalization ; Hospitals ; Humans ; Minority Groups
    Language English
    Publishing date 2021-05-05
    Publishing country England
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ISSN 1471-2458
    ISSN (online) 1471-2458
    DOI 10.1186/s12889-021-10923-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Names-based ethnicity enhancement of hospital admissions in England, 1999-2013.

    Petersen, Jakob / Kandt, Jens / Longley, Paul A

    International journal of medical informatics

    2021  Volume 149, Page(s) 104437

    Abstract: Background: Accurate recording of ethnicity in electronic healthcare records is important for the monitoring of health inequalities. Yet until the late 1990s, ethnicity information was absent from more than half of records of patients who received ... ...

    Abstract Background: Accurate recording of ethnicity in electronic healthcare records is important for the monitoring of health inequalities. Yet until the late 1990s, ethnicity information was absent from more than half of records of patients who received inpatient care in England. In this study, we report on the usefulness of a names-based ethnicity classification, Ethnicity Estimator (EE), for addressing this gap in the hospital records.
    Materials and methods: Data on inpatient hospital admissions were obtained from Hospital Episode Statistics (HES) between April 1999 and March 2014. The data were enhanced with ethnicity coding of participants' surnames using the EE software. Only data on the first episode for each patient each year were included.
    Results: A total of 111,231,653 patient-years were recorded between April 1999 and March 2014. The completeness of ethnicity records improved from 59.5 % in 1999 to 90.5 % in 2013 (financial year). Biggest improvement was seen in the White British group, which increased from 55.4 % in 1999 to 73.9 % in 2013. The correct prediction of NHS-reported ethnicity varied by ethnic group (2013 figures): White British (89.8 %), Pakistani (81.7 %), Indian (74.6 %), Chinese (72.9 %), Bangladeshi (63.4 %), Black African (57.3 %), White Other (50.5 %), White Irish (45.0 %). For other ethnic groups the prediction success was low to none. Prediction success was above 70 % in most areas outside London but fell below 40 % in parts of London.
    Conclusion: Studies of ethnic inequalities in hospital inpatient care in England are limited by incomplete data on patient ethnicity collected in the 1990s and 2000s. The prediction success of a names-based ethnicity classification tool has been quantified in HES for the first time and the results can be used to inform decisions around the optimal analysis of ethnic groups using this data source.
    MeSH term(s) England ; Ethnic Groups ; European Continental Ancestry Group ; Hospitalization ; Hospitals ; Humans
    Language English
    Publishing date 2021-03-05
    Publishing country Ireland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1466296-6
    ISSN 1872-8243 ; 1386-5056
    ISSN (online) 1872-8243
    ISSN 1386-5056
    DOI 10.1016/j.ijmedinf.2021.104437
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Confusion and Hallucination in a Geriatric Patient. Pitfalls of a Rare Differential: Case Report of an Anti-LGI1-Encephalitis.

    Meier, Luzia / Weinrebe, Wolfram / Annoni, Jean-Marie / Petersen, Jens A

    Clinical interventions in aging

    2022  Volume 17, Page(s) 1423–1432

    Abstract: Background: Confusion and hallucinations in geriatric patients are frequent symptoms and typically associated with delirium, late-life psychosis or dementia syndromes. A far rarer but well-established differential in patients with rapid cognitive ... ...

    Abstract Background: Confusion and hallucinations in geriatric patients are frequent symptoms and typically associated with delirium, late-life psychosis or dementia syndromes. A far rarer but well-established differential in patients with rapid cognitive deterioration, acute psychosis, abnormal movements and seizures is autoimmune encephalitis. Exemplified by our case we highlight clinical and economic problems arising in management of geriatric patients with cognitive decline and psychotic symptoms.
    Case presentation: A 77-year-old female caucasian patient with an unremarkable medical history was hospitalized after a fall in association with diarrhea and hyponatremia. Upon adequate therapy, disorientation and troubled short-term memory persisted. Within a week the patient developed visual hallucinations. Basic blood and urine samples and imaging (cranial computed tomography and magnetic resonance imaging) were unremarkable. With progressive cognitive decline, amnestic impairment, word finding difficulty and general apathy, psychiatric and neurologic expertise was introduced. Advanced diagnostics did not resolve a final diagnosis; an electroencephalogram showed unspecific generalized slowing. Extended clinical observation revealed visual hallucinations and faciobrachial dystonic seizures. A treatment with anticonvulsants was initiated. Cerebrospinal fluid ultimately tested positive for voltage-gated potassium channel LGl1 (leucine-rich-inactivated-1) antibodies confirming diagnosis of autoimmune anti-LGI1 encephalitis. Immediate immunotherapy (high-dose glucocorticoids and administration of intravenous immunoglobulin G) led to a rapid improvement of the patient's condition. After immunotherapy was tapered, the patient had one relapse and completely recovered with reintroduction of glucocorticoids and initiation of therapy with rituximab.
    Conclusion: Rapidly progressive dementia in geriatric patients demands a structured and multidisciplinary diagnostic approach. Accurate management and financially supportable care is a major issue in rare diseases such as anti-LGI1-encephalitis. Education and awareness about autoimmune encephalitis of all physicians treating a geriatric population is important in order to involve expertise and establish treatment within reasonable time.
    MeSH term(s) Aged ; Anticonvulsants/therapeutic use ; Confusion/complications ; Confusion/drug therapy ; Dementia/complications ; Encephalitis/diagnosis ; Encephalitis/drug therapy ; Female ; Hallucinations/complications ; Hallucinations/drug therapy ; Hashimoto Disease ; Humans ; Immunoglobulins, Intravenous/therapeutic use ; Intracellular Signaling Peptides and Proteins/therapeutic use ; Leucine/therapeutic use ; Limbic Encephalitis/diagnosis ; Limbic Encephalitis/drug therapy ; Potassium Channels, Voltage-Gated/therapeutic use ; Rituximab/therapeutic use ; Seizures/drug therapy ; Seizures/etiology
    Chemical Substances Anticonvulsants ; Immunoglobulins, Intravenous ; Intracellular Signaling Peptides and Proteins ; Potassium Channels, Voltage-Gated ; Rituximab (4F4X42SYQ6) ; Leucine (GMW67QNF9C)
    Language English
    Publishing date 2022-09-26
    Publishing country New Zealand
    Document type Case Reports
    ZDB-ID 2364924-0
    ISSN 1178-1998 ; 1176-9092
    ISSN (online) 1178-1998
    ISSN 1176-9092
    DOI 10.2147/CIA.S380316
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Ethnic inequalities in hospital admissions in England

    Jakob Petersen / Jens Kandt / Paul A. Longley

    BMC Public Health, Vol 21, Iss 1, Pp 1-

    an observational study

    2021  Volume 11

    Abstract: Abstract Background Ethnic inequalities in health are well-known and partly explained by social determinants such as poorer living and working conditions, health behaviours, discrimination, social exclusion, and healthcare accessibility factors. ... ...

    Abstract Abstract Background Ethnic inequalities in health are well-known and partly explained by social determinants such as poorer living and working conditions, health behaviours, discrimination, social exclusion, and healthcare accessibility factors. Inequalities are known both for self-reported health and for diseases such as diabetes, cardiovascular diseases, respiratory diseases, and non-specific chest pains. Most studies however concern individual diseases or self-reported health and do not provide an overview that can detect gaps in existing knowledge. The aim of this study is thus to identify ethnic inequalities in inpatient hospital admission for all major disease categories in England. Methods Observational study of the inpatient hospital admission database in England enhanced with ethnicity coding of participants’ surnames. The primary diagnosis was coded to Level 1 of the Global Burden of Disease groups. For each year, only the first admission for each condition for each participant was included. If a participant was readmitted within two days only the first admission was counted. Admission risk for all major disease groups for each ethnic group relative to the White British group were calculated using logistic regression adjusting for age and area deprivation. Results 40,928,105 admissions were identified between April 2009 and March 2014. Ethnic inequalities were found in cardiovascular diseases, respiratory diseases, chest pain, and diabetes in line with previous studies. Additional inequalities were found in nutritional deficiencies, endocrine disorders, and sense organ diseases. Conclusions The results of this study were consistent with known inequalities, but also found previously unreported disparities in nutritional deficiencies, endocrine disorders, and sense organ diseases. Further studies would be required to map out the relevant care pathways for ethnic minorities and establish whether preventive measures can be strengthened.
    Keywords Health disparities ; Ethnicity ; Departments ; hospital ; Electronic health records ; Public aspects of medicine ; RA1-1270
    Subject code 360
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: The anterior branch of the medial femoral cutaneous nerve innervates the anterior knee: a randomized volunteer trial.

    Bjørn, Siska / Nielsen, Thomas D / Jensen, Anne E / Jessen, Christian / Kolsen-Petersen, Jens A / Moriggl, Bernhard / Hoermann, Romed / Nyengaard, Jens R / Bendtsen, Thomas F

    Minerva anestesiologica

    2023  Volume 89, Issue 7-8, Page(s) 643–652

    Abstract: Background: The midline skin incision for total knee arthroplasty may be an important generator of chronic neuropathic pain. The incision is innervated by the medial femoral cutaneous nerve (MFCN), the intermediate femoral cutaneous nerves (IFCN) and ... ...

    Abstract Background: The midline skin incision for total knee arthroplasty may be an important generator of chronic neuropathic pain. The incision is innervated by the medial femoral cutaneous nerve (MFCN), the intermediate femoral cutaneous nerves (IFCN) and the infrapatellar branch from the saphenous nerve. The MFCN divides into an anterior (MFCN-A) and a posterior branch (MFCN-P). The primary aim was to compare the areas anesthesized by MFCN-A versus MFCN-P block for coverage of the incision.
    Methods: Nineteen healthy volunteers had IFCN and saphenous nerve blocks. The subgroup of volunteers with a non-anesthetized gap between the areas anesthetized by the saphenous and the IFCN blocks was defined as the study group for the primary outcome. Subsequently selective MFCN-A block and MFCN block (MFCN-A + MFCN-P) were performed to investigate the contributions from MFCN-A and MFCN-P to the innervation of the midline incision. All assessments were performed blinded.
    Results: Ten out of 19 volunteers had a non-anesthetized gap. Nine out of these 10 volunteers had coverage of the non-anesthetized gap after selective anesthesia of the MFCN-A, whereas anesthesia of the MFCN-P did not contribute to coverage of the gap in any of the 10 volunteers.
    Conclusions: In half of the cases, a gap of non-anesthetized skin was present on the surgical midline incision after anesthesia of the saphenous nerve and the IFCN. This gap was covered by selective anesthesia of the MFCN-A without contribution from MFCN-P. The selective MFCN-A block may be relevant for diagnosis and interventional management of neuropathic pain due to injury of MFCN-A.
    MeSH term(s) Humans ; Arthroplasty, Replacement, Knee ; Femoral Nerve ; Healthy Volunteers ; Nerve Block ; Neuralgia
    Language English
    Publishing date 2023-02-27
    Publishing country Italy
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 123584-9
    ISSN 1827-1596 ; 0026-4717 ; 0375-9393
    ISSN (online) 1827-1596
    ISSN 0026-4717 ; 0375-9393
    DOI 10.23736/S0375-9393.22.16910-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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