[1] Yale Sch Med, Dept Internal Med, New Haven, CT USA
[2] Yale Sch Publ Hlth, Ctr Interdisciplinary Res AIDS, New Haven, CT USA
[3] Brown Univ, Dept Epidemiol, Sch Publ Hlth, Providence, RI 02912 USA
[4] Yale Sch Med, Dept Psychiat, New Haven, CT USA
[5] Univ Washington, Dept Psychiat & Behav Sci, Seattle, WA 98195 USA
[6] UW Med Valley Med Ctr Psychiat, Renton, WA USA
[7] Rutgers State Univ, Inst Hlth, Ctr Hlth Serv Res, Rutgers, NJ USA
[8] VA Connecticut Healthcare Syst, West Haven, CT USA
[9] Yale Sch Med, Dept Pediat, New Haven, CT USA
[10] Hampton VA Med Ctr, Hampton, VA USA
[11] Univ Pittsburgh, Sch Med, Dept Internal Med, Pittsburgh, PA USA
[12] Stanford Univ, Sch Med, Stanford Ctr Populat Hlth Sci, Palo Alto, CA 94304 USA
[13] London Sch Hyg & Trop Med, Fac Epidemiol & Populat Hlth, London, England
[14] Univ Washington, Sch Publ Hlth, Dept Hlth Serv, Seattle, WA 98195 USA
[15] VA Puget Sound Hlth Serv Res Dev, Seattle Denver Ctr Innovat Vet Ctr Value Driven C, Seattle, WA USA