1. Vanderbilt University School of Nursing, Nashville, TN, and the Geriatric Research Education and Clinical Center, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
2. Center for Health Services Research in Primary Care, Durham Veterans Affairs Medical Center, Durham, North Carolina, USA
3. Department of Health Policy and Management, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
4. Veterans Affairs Mental Health and Chaplaincy Program and Mental Illness Research, Education and Clinical Center, Durham, North Carolina, USA
5. Department of Psychiatry and Behavioral Science, Duke University, Durham, North Carolina, USA
6. Department of Population Health Sciences, Duke University, Durham, North Carolina, USA
7. Division of General Internal Medicine, Duke University, Durham, North Carolina, USA
8. Richard L. Roudebush Veterans Affairs Medical Center, Indianapolis, Indiana, USA
9. VA San Diego Healthcare System, San Diego, California, USA