[1] Indiana Univ, Div Pulm Crit Care Sleep & Occupat Med, Sch Med, Indianapolis, IN USA
[2] Fred Hutchinson Canc Ctr, Canc Prevent Program, Publ Hlth Sci Div, 1100 Fairview Ave N, Seattle, WA 98109 USA
[3] Univ Washington, Div Pulm Crit Care & Sleep Med, Seattle, WA USA