[1] Western Univ, Dept Med, London, ON, Canada
[2] Western Univ, Dept Philosophy, 1151 Richmond St, London, ON N6A 3K7, Canada
[3] McGill Univ, Montreal Childrens Hosp, Div Crit Care Med, Montreal, PQ, Canada
[4] Canadian Blood Serv, Syst Dev, Ottawa, ON, Canada
[5] Univ Southern Calif, Gould Sch Law, 699 Exposit Blvd, Los Angeles, CA 90089 USA
[6] Univ Southern Calif, Keck Sch Med, Los Angeles, CA USA
[7] Boston Childrens Hosp, Dept Anesthesiol Crit Care & Pain Med, Boston, MA USA
[8] Harvard Med Sch, Dept Global Hlth & Social Med, Boston, MA USA
[9] Univ Florida, Coll Med Jacksonville, Dept Pediat, Div Pediat Crit Care Med, Jacksonville, FL USA
[10] Ontario Hlth Trillium Gift Life Network, Toronto, ON, Canada
[11] McMaster Univ, Dept Med, Div Emergency, Hamilton, ON, Canada
[12] McMaster Univ, Dept Med, Div Crit Care Med, Hamilton, ON, Canada
[13] Western Univ, Schulich Sch Med & Dent, Dept Clin Neurol Sci, London, ON, Canada
[14] Dartmouth Geisel Sch Med, Dept Neurol, Hanover, NH USA
[15] NHLBI, Adv Technol & Surg Branch, Div Cardiovasc Sci, Dept Bioeth,Clin Ctr,NIH, Bethesda, MD USA
[16] Stanford Univ, Sch Med, Dept Med, Div Cardiovasc Med, Stanford, CA USA
[17] NHLBI, Heart Dev & Struct Dis Branch, Div Cardiovasc Sci, NIH, Bethesda, MD USA
[18] Childrens Natl Hosp, Div Cardiol, Washington, DC USA
[19] NYU, Grossman Sch Med, Ronald O Perelman Dept Emergency Med, New York, NY USA
[20] NYU, Grossman Sch Med, Dept Populat Hlth, New York, NY USA