[1] Univ Washington, Dept Hlth Serv, Seattle, WA 98195 USA
[2] Univ Washington, Ctr Cost & Outcomes Res, Seattle, WA 98195 USA
[3] Univ Washington, Dept Biostat, Seattle, WA 98195 USA
[4] Univ Washington, Dept Psychiat, Seattle, WA 98195 USA
[5] Univ Washington, Dept Epidemiol, Seattle, WA 98195 USA
[6] Univ Washington, Dept Geog, Seattle, WA 98195 USA
[7] Fred Hutchinson Canc Res Ctr, Canc Prevent Res Program, Seattle, WA 98104 USA