About the Authors

Jiong Li

jl@soci.au.dk

Affiliation Department of Epidemiology, School of Public Health, University of Aarhus, Aarhus, Denmark

Jørn Olsen

Affiliations Department of Epidemiology, School of Public Health, University of Aarhus, Aarhus, Denmark, Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America

Mogens Vestergaard

Affiliations Research Unit for General Practice, University of Aarhus, Aarhus, Denmark, Department of General Practice, School of Public Health, University of Aarhus, Aarhus, Denmark

Carsten Obel

Affiliation Department of General Practice, School of Public Health, University of Aarhus, Aarhus, Denmark

Jennifer L. Baker

Affiliation Institute of Preventive Medicine, Copenhagen University Hospital, Copenhagen, Denmark

Thorkild I. A. Sørensen

Affiliation Institute of Preventive Medicine, Copenhagen University Hospital, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JL JO MV CO JLB TIAS. Analyzed the data: JL JO MV CO JLB TIAS. Contributed reagents/materials/analysis tools: JL JO MV CO JLB TIAS. Wrote the paper: JL JO MV CO JLB TIAS.