[1] Univ Washington, Div Cardiol, Seattle, WA 98195 USA
[2] Univ Washington, Dept Bioeth & Humanities, Seattle, WA 98195 USA
[3] Univ Washington, Dept Obstet & Gynecol, Seattle, WA 98195 USA
[4] Univ Washington, Div Pulm Crit Care & Sleep Med, Seattle, WA USA
[5] Univ Washington, Cambia Palliat Care Ctr Excellence, Seattle, WA 98195 USA