[1] Sunnybrook Hlth Sci Ctr, Dept Psychiat, Toronto, ON, Canada
[2] Univ Toronto, Toronto, ON, Canada
[3] Athabasca Univ, Athabasca, AB, Canada
[4] Univ Waterloo, Waterloo, ON, Canada
[5] Med Univ Vienna, Ctr Publ Hlth, Dept Social & Prevent Med, Unit Suicide Res & Mental Hlth Promot, Vienna, Austria
[6] Univ Toronto, Dept Psychiat, 2075 Bayview Ave,FG52, Toronto, ON M4N 3M5, Canada