About the Authors

Kirsten T. Eriksen

kirsthor@cancer.dk

Affiliation Danish Cancer Society Research Center, Copenhagen, Denmark

Ole Raaschou-Nielsen

Affiliation Danish Cancer Society Research Center, Copenhagen, Denmark

Joseph K. McLaughlin

Affiliation International Epidemiology Institute, Rockville, Maryland, United States of America

Loren Lipworth

Affiliation International Epidemiology Institute, Rockville, Maryland, United States of America

Anne Tjønneland

Affiliation Danish Cancer Society Research Center, Copenhagen, Denmark

Kim Overvad

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

Mette Sørensen

Affiliation Danish Cancer Society Research Center, Copenhagen, Denmark

Competing Interests

The present study was supported by the International Epidemiology Institute, which received funding from a commercial source (unrestricted research grant from the 3M Company). This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Critically revised the manuscript: MS ORN JKM LL KO AT. Analyzed the data: KTE . Contributed reagents/materials/analysis tools: KTE MS JKM LL AT KO. Wrote the paper: KTE.