1. Psychology Service/Medical Practice, San Francisco VHA Health Care System , San Francisco, CA, USA
2. Psychology Service, Durham VHA Health Care System , Durham, NC, USA
3. Palo Alto Geriatric, Research, Education and Clinical Center (GRECC), VHA Palo Alto Health Care System , Palo Alto, CA, USA
4. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine , Stanford, CA, USA
5. Mathematica Policy Research, Inc ., Oakland, CA, USA
6. Geriatric Research Education and Clinical Center (GRECC), VHA Greater Los Angeles Health Care System , Los Angeles, CA, USA
7. Division of Geriatrics, David Geffen School of Medicine at University of California, Los Angeles (UCLA) , Los Angeles, CA, USA