[1] Univ Washington, Dept Med, Div Gen Internal Med, Seattle, WA 98104 USA
[2] Univ Washington, Cambia Palliat Care Ctr Excellence, Seattle, WA 98104 USA
[3] Univ Washington, Harborview Med Ctr, Dept Med, Div Pulm Crit Care & Sleep Med, Seattle, WA 98104 USA
[4] Univ Washington, Harborview Med Ctr, Div Pulm Crit Care & Sleep Med, 325 Ninth Ave,Box 359762, Seattle, WA 98104 USA