[1] Vet Affairs Puget Sound Hlth Care Syst, GRECC, Seattle, WA 98108 USA
[2] Univ Washington, Sch Med, Dept Med, Div Gerontol & Geriatr Med, Seattle, WA 98195 USA
[3] Vet Affairs Puget Sound Hlth Care Syst, Mental Illness Res Educ & Clin Ctr, Vet Affairs Northwest Network, Seattle, WA 98108 USA
[4] Univ Washington, Sch Med, Dept Psychiat & Behav Sci, Seattle, WA 98195 USA
[5] Univ Washington, Dept Mol & Cellular Biol, Seattle, WA 98195 USA