[1] Univ Washington, Dept Psychosocial & Community Hlth, Seattle, WA 98195 USA
[2] Univ Michigan, Dept Epidemiol, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Hlth Management & Policy, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Dept Internal Med, Ann Arbor, MI 48109 USA
[5] Publ Hlth Seattle & King Cty, Seattle, WA USA