About the Authors

Govert E. Bijwaard

Bijwaard@nidi.nl

Affiliation Netherlands Interdisciplinary Demographic Institute (NIDI-KNAW)/University of Groningen, the Hague, the Netherlands

Frans van Poppel

Affiliation Netherlands Interdisciplinary Demographic Institute (NIDI-KNAW)/University of Groningen, the Hague, the Netherlands

Peter Ekamper

Affiliation Netherlands Interdisciplinary Demographic Institute (NIDI-KNAW)/University of Groningen, the Hague, the Netherlands

L. H. Lumey

Affiliations Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, United States of America, Molecular Epidemiology, Leiden University Medical Center, Leiden, the Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: GEB. Contributed reagents/materials/analysis tools: GEB PE. Wrote the paper: GEB FvP LHL PE.