[1] Dalhousie Univ, Fac Hlth, Sch Hlth Adm, Halifax, NS, Canada
[2] Dalhousie Univ, Dept Crit Care Med, Halifax, NS, Canada
[3] Canadian Ctr Vaccinol, Halifax, NS, Canada
[4] IWK Hlth Ctr, Halifax, NS, Canada
[5] Univ Pittsburgh, CRISMA Ctr, Dept Crit Care Med, Pittsburgh, PA USA
[6] Univ Calgary, Dept Crit Care Med, Calgary, AB, Canada
[7] Univ Calgary, OBrien Inst Publ Hlth, Calgary, AB, Canada
[8] Univ Laval, Ctr Rech CHU Quebec, Quebec City, PQ, Canada
[9] Inst Natl Sante Publ Quebec, Quebec City, PQ, Canada
[10] Univ Calgary, Cumming Sch Med, Dept Psychiat, Calgary, AB, Canada
[11] Univ Calgary, Hotchkiss Brain Inst, Cumming Sch Med, Calgary, AB, Canada
[12] St Francis Xavier Univ, Rankin Sch Nursing, Antigonish, NS, Canada
[13] Univ Calgary, Dept Med, Calgary, AB, Canada
[14] Univ Calgary, Libin Cardiovasc Inst, Calgary, AB, Canada
[15] Univ Alberta, Sch Publ Hlth, Edmonton, AB, Canada
[16] Univ Alberta, Fac Nursing, Edmonton, AB, Canada
[17] Unity Hlth Toronto, St Michaels Hosp, Li Ka Shing Knowledge Inst, Toronto, ON, Canada
[18] Univ Toronto, Dept Med, Toronto, ON, Canada
[19] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[20] Dalhousie Univ, Sociol & Social Anthropol, Halifax, NS, Canada
[21] Univ Hawaii Manoa, John A Burns Sch Med, Dept Surg, Honolulu, HI 96813 USA
[22] Queens Med Ctr, Dept Surg, Honolulu, HI USA
[23] Alberta Hlth Serv, Calgary, AB, Canada
[24] Dalhousie Univ, Fac Med, Dept Pediat, Halifax, NS, Canada
[25] Dalhousie Univ, Fac Med, Dept Microbiol & Immunol, Halifax, NS, Canada