About the Authors

Oleguer Plana-Ripoll

opr@ph.au.dk

Affiliation Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark

Jørn Olsen

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

Per Kragh Andersen

Affiliation Department of Biostatistics, University of Copenhagen, Copenhagen, Denmark

Guadalupe Gómez

Affiliation Departament d'Estadística i Investigació Operativa, Universitat Politècnica de Catalunya, Barcelona, Spain

Sven Cnattingius

Affiliation Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden

Jiong Li

Affiliation Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JO JL. Analyzed the data: OPR. Contributed to the writing of the manuscript: OPR. Planned the data analysis: OPR PKA GG. Interpreted the results: OPR JO PKA GG SC JL. Revised the manuscript: OPR JO PKA GG SC JL. Approved the submission: OPR JO PKA GG SC JL.