[1] Univ British Columbia, Dept Psychiat, Vancouver, BC V5Z 1M9, Canada
[2] Natl Inst Mental Hlth & Neurosci, Dept Psychiat, Bangalore 560029, Karnataka, India
[3] Douglas Mental Hlth Univ Inst, Neuromodulat Res Clin, Montreal, PQ, Canada
[4] McGill Univ, Montreal, PQ, Canada
[5] Douglas Mental Hlth Univ Inst, Depress Disorders Program, Montreal, PQ, Canada
[6] Univ British Columbia, Mood Disorders Ctr Excellence, Vancouver, BC V5Z 1M9, Canada