About the Authors

Chee W. Chia

chiac@mail.nih.gov

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Michelle Shardell

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Toshiko Tanaka

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

David D. Liu

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Kristofer S. Gravenstein

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Eleanor M. Simonsick

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Josephine M. Egan

Contributed equally to this work with: Josephine M. Egan, Luigi Ferrucci

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Luigi Ferrucci

Contributed equally to this work with: Josephine M. Egan, Luigi Ferrucci

Affiliation Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: CWC EMS JME LF. Data curation: DDL KSG TT. Formal analysis: CWC MS. Funding acquisition: JME LF. Investigation: DDL KSG TT. Methodology: CWC MS EMS JME LF. Project administration: JME LF. Resources: CWC JME LF. Supervision: JME LF. Writing – original draft: CWC. Writing – review & editing: CWC MS TT DDL KSG EMS JME LF.