[1] Montana State Univ, Hlth & Human Dev, 305 Herrick Hall,POB 173540, Bozeman, MT 59717 USA
[2] VA Puget Sound Hlth Care Syst, Ctr Excellence Substance Abuse Treatment & Educ, Seattle, WA USA
[3] VA Puget Sound Hlth Care Syst, Hlth Serv Res & Dev, Seattle, WA USA
[4] Univ Washington, Sch Med, Dept Psychiat & Behav Sci, Seattle, WA 98195 USA
[5] Univ Washington, Sch Med, Dept Med, Seattle, WA 98195 USA
[6] VA Puget Sound Hlth Care Syst, Seattle, WA USA
[7] Univ Washington, Dept Hlth Serv, Sch Publ Hlth, Seattle, WA 98195 USA