About the Authors

Amy D. Owen

Affiliation Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina, United States of America

R. David Hayward

david.hayward@duke.edu

Affiliations Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, United States of America, Neuropsychiatric Imaging Research Laboratory, Duke University Medical Center, Durham, North Carolina, United States of America

Harold G. Koenig

Affiliations Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina, United States of America, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, United States of America, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America

David C. Steffens

Affiliations Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, United States of America, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America

Martha E. Payne

Affiliations Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina, United States of America, Neuropsychiatric Imaging Research Laboratory, Duke University Medical Center, Durham, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ADO RDH MEP DCS. Performed the experiments: ADO RDH. Analyzed the data: RDH. Contributed reagents/materials/analysis tools: DCS MEP. Wrote the manuscript: ADO RDH MEP HGK DCS.