About the Authors
- Sven Karstens
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* E-mail: sven.karstens@med.uni-heidelberg.de
Affiliations Institute of Health Promotion and Clinical Movement Science, German Sport University Cologne, Cologne, Germany, Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
- Katja Hermann
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Affiliation Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
- Ingo Froböse
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Affiliation Institute of Health Promotion and Clinical Movement Science, German Sport University Cologne, Cologne, Germany
- Stephan W. Weiler
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Affiliations Audi Medical Services, Audi, Ingolstadt, Germany, Department of Occupational Medicine, University Medical Center Schleswig-Holstein, Campus Luebeck, Luebeck, Germany
Competing Interests
Dr SW Weiler is currently employed at Audi Medical Services as an Occupational Health physician and was working for the University of Luebeck when the study was performed. All data were collected on behalf of Institute of Occupational Medicine, University of Luebeck, Germany. To our best knowledge, none of the participants worked for Audi. Audi had in no way influence on the results nor took economical benefit from this study. Thus present employment status does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Acquisition of data: SK SWW. Critical revision of the article: IF. Conceived and designed the experiments: SK IF SWW. Analyzed the data: SK KH IF SWW. Wrote the paper: SK KH SWW.