[1] Univ Laval, Dept Med Familiale & Med Urgence, Fac Med, Quebec City, PQ, Canada
[2] Univ Laval, Emergency Dept, CHU Quebec, Quebec City, PQ, Canada
[3] Univ Paris, CHU Cochin, AP HP, Emergency Dept, Paris, France
[4] Univ Laval, Ctr Rech, CHU Quebec, AXe Sante Populat & Prat Optimales Sante, Quebec City, PQ, Canada
[5] Ctr Excellence Vieillissement Quebec, Quebec City, PQ, Canada
[6] Univ Toronto, Dept Med, Div Emergency Med 5, Toronto, ON, Canada
[7] St Michaels Hosp, Dept Emergency Med, Toronto, ON, Canada