About the Authors

Rachel A. Murphy

Rachel.murphy@nih.gov

Affiliation Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, Bethesda, Maryland, United States of America

Catherine Schairer

Affiliation Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America

Gretchen L. Gierach

Affiliation Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America

Celia Byrne

Affiliation Department of Preventive Medicine and Biometrics, Uniformed Services University of Health Sciences, Bethesda, Maryland, United States of America

Mark E. Sherman

Affiliation Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America

Thomas C. Register

Affiliation Sticht Center on Aging, Section on Comparative Medicine Pathology, Radiology, Winston-Salem, North Carolina, United States of America

Jingzhong Ding

Affiliation Sticht Center on Aging Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America

Stephen B. Kritchevsky

Affiliation Sticht Center on Aging Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America

Tamara B. Harris

Affiliation Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RAM CS GLG MES CB TBH SBK TCR. Analyzed the data: RAM CB. Wrote the manuscript: RAM JD GLG CB TBH. Interpretation of the data: RAM GLG CB CS JD.