[1] Oregon Hlth Author, Multnomah Cty Hlth Dept, Portland, OR USA
[2] Univ Washington, Dept Epidemiol, Sch Publ Hlth & Community Med, Seattle, WA 98195 USA
[3] Univ Washington, Dept Psychosocial & Community Hlth, Sch Publ Hlth & Community Med, Seattle, WA 98195 USA
[4] Univ Washington, Dept Hlth Serv, Sch Publ Hlth & Community Med, Seattle, WA 98195 USA
[5] Univ Washington, Hlth Promot Res Ctr, Seattle, WA 98195 USA