[1] Univ Calgary, Dept Crit Care Med, Calgary, AB, Canada
[2] Alberta Hlth Serv, Edmonton, AB, Canada
[3] Brain Injury Assoc Canada, Ottawa, ON, Canada
[4] Univ British Columbia, Dept Dept Surg, Vancouver, BC, Canada
[5] Ontario Neurotrauma Fdn, Toronto, ON, Canada
[6] Nanyang Technol Univ, Lee Kong Chian Sch Med, Singapore, Singapore
[7] Univ Washington, Dept Rehabil Med, Seattle, WA 98195 USA
[8] Univ Calgary, Dept Surg, Calgary, AB, Canada
[9] Univ Calgary, Dept Emergency Med, Calgary, AB, Canada
[10] Univ Laval, Dept Social & Prevent Med, Quebec City, PQ, Canada
[11] Univ Washington, Dept Pediat, Seattle, WA USA
[12] Accreditat Canad, Calgary, AB, Canada
[13] Univ Calgary, Dept Crit Care Med Med & Community Hlth Sci, OBrien Inst Publ Hlth, Calgary, AB, Canada