[1] Santa Cabrini Hosp, Intens Care Unit, CEMTL, Montreal, PQ, Canada
[2] Riverside Univ Hlth Syst, Emergency Dept, Moreno Valley, CA USA
[3] Loma Linda Univ, Med Ctr, Loma Linda, CA USA
[4] Desert Reg Med Ctr, Palm Springs, CA USA
[5] Medstar Washington Hosp Ctr, Dept Crit Care, Washington, DC USA
[6] Medstar Washington Hosp Ctr, Dept Emergency Med, Washington, DC USA