[1] Univ Montreal, Fac Med, Dept Psychiat, Montreal, PQ H3C 3J7, Canada
[2] Univ Montreal, Dept Psychiat, Ctr Rech Fernand Seguin, Louis H Lafontaine Hosp, Montreal, PQ H3C 3J7, Canada
[3] McGill Univ, Fac Med, Dept Neurol & Neurosurg, Montreal, PQ, Canada
[4] Univ Sherbrooke, Sherbrooke, PQ J1K 2R1, Canada