[1] Univ Utah Hlth, Dept Surg, Div Cardiothorac Surg, Salt Lake City, UT USA
[2] Univ Utah Hlth, Dept Surg, Div Emergency Med, Salt Lake City, UT USA
[3] Columbia Coll Phys & Surg, Dept Med, Div Pulm Allergy & Crit Care Med, New York Presbyterian Hosp, New York, NY USA
[4] Univ Penn, Perelman Sch Med, Dept Emergency Med, Dept Anesthesiol & Crit Care, Philadelphia, PA 19104 USA
[5] Hosp Univ 12 Octubre, Crit Care Dept, Madrid, Spain
[6] Univ Penn, Dept Anesthesiol & Crit Care, Philadelphia, PA 19104 USA
[7] Univ Toronto, Univ Hlth Network, Interdept Div Crit Care Med, Toronto, ON, Canada
[8] Sinai Hlth Syst, Toronto, ON, Canada