[1] Univ British Columbia, Dept Psychiat, 420-5950 Univ Blvd, Vancouver, BC V6T 1Z3, Canada
[2] Harvard Med Sch, Beth Israel Deaconess Med Ctr, Dept Psychiat, Boston, MA 02115 USA
[3] Swinburne Univ, Ctr Mental Hlth, Melbourne, Vic, Australia
[4] Univ British Columbia, Dept Psychol, Vancouver, BC, Canada