[1] Univ Toronto, Dept Med, Toronto, ON M5G 2C4, Canada
[2] Univ Hlth Network, Dept Emergency Med, Toronto, ON M5G 2C4, Canada
[3] Addis Ababa Univ, Dept Emergency Med, Addis Ababa, Ethiopia
[4] Ontario Poison Ctr, Toronto, ON, Canada
[5] Toronto Addis Acad Collaborat Emergency Med TAAAC, Toronto, ON M5G 2C4, Canada
[6] Li Ka Shing Knowledge Inst, Unity Hlth, Toronto, ON, Canada
[7] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[8] 200 Elizabeth St, ES-G-405, Toronto, ON M5G 2C4, Canada