[1] Monash Univ, Dept Psychiat, Clayton, Vic, Australia
[2] Flinders Univ S Australia, Dept Psychiat, Coll Med & Publ Hlth, Adelaide, SA, Australia
[3] Consortium Australian Acad Psychiatrists Independ, Canberra, ACT, Australia
[4] Australian Natl Univ, Acad Unit Psychiat & Addict Med, Med Sch, Canberra, ACT, Australia
[5] Univ Queensland, Sch Med, Princess Alexandra Hosp, Brisbane, Qld, Australia
[6] Dalhousie Univ, Dept Psychiat, Halifax, NS, Canada
[7] Dalhousie Univ, Dept Community Hlth & Epidemiol, Halifax, NS, Canada