About the Authors

Anna Reeske

Affiliation Leibniz - Institute for Prevention Research and Epidemiology (BIPS), Bremen, Germany

Jacob Spallek

Affiliations Leibniz - Institute for Prevention Research and Epidemiology (BIPS), Bremen, Germany, Department of Epidemiology and International Public Health, School of Public Health, Bielefeld University, Bielefeld, Germany

Karin Bammann

Affiliations Leibniz - Institute for Prevention Research and Epidemiology (BIPS), Bremen, Germany, Institute for Public Health and Nursing Research, University of Bremen, Bremen, Germany

Gabriele Eiben

Affiliation Department of Public Health and Community Medicine, University of Gothenburg, Gothenburg, Sweden

Stefaan De Henauw

Affiliation Department of Public Health, Ghent University, Gent, Belgium

Yiannis Kourides

Affiliation Research and Education Institute of Child Health, Strovolos, Cyprus

Peter Nagy

Affiliation Department of Pediatrics, University of Pécs, Pécs, Hungary

Wolfgang Ahrens

ahrens@bips.uni-bremen.de

Affiliations Leibniz - Institute for Prevention Research and Epidemiology (BIPS), Bremen, Germany, Institute for Statistics, University of Bremen, Bremen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Coordination of German study sample collection: KB WA. Discussion of analysis and results: AR JS KB GE SDH YK PN WA. Conceived and designed the experiments: AR JS WA. Analyzed the data: AR WA. Wrote the paper: AR WA.