[1] Fdn Policlin Univ A Gemelli IRCCS, Dept Emergency Intens Care Med & Anesthesia, Rome, Italy
[2] Univ Cattolica Sacro Cuore, Fdn Policlin Univ A Gemelli IRCCS, Dept Anesthesiol & Intens Care Med, I-00168 Rome, Italy
[3] Univ Toronto, Interdept Div Crit Care Med, Toronto, ON, Canada
[4] Univ Hlth Network, Sinai Hlth Syst, Dept Med, Div Respirol, Toronto, ON, Canada
[5] Univ Hosp, Adult Intens Care Unit, Lausanne, Switzerland
[6] Univ Lausanne, Lausanne, Switzerland