[1] Univ Toronto, Dept Emergency Med, Toronto, ON, Canada
[2] Univ Toronto, Dept Med, Toronto, ON, Canada
[3] Univ Hlth Network, Emergency Dept, Toronto, ON, Canada
[4] Sunnybrook Hlth Serv, Emergency Dept, Toronto, ON, Canada
[5] Toronto East Gen Hosp, Dept Emergency Med, Toronto, ON, Canada
[6] Mt Sinai Hosp, Temmy Latner Ctr Palliat Care, Toronto, ON, Canada
[7] Mt Sinai Hosp, Emergency Serv, Toronto, ON, Canada
[8] St Michaels Hosp, Dept Emergency Med, Toronto, ON, Canada