[1] Univ Calif San Francisco, Dept Med, Div Hosp Med, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Dept Social & Behav Sci, Sociol Program, San Francisco, CA 94143 USA
[3] Univ Washington, Dept Med, Div Pulm Crit Care & Sleep Med, Cambia Palliat Care Ctr Excellence, Seattle, WA USA