[1] MONTREAL GEN HOSP, DEPT PSYCHIAT, MONTREAL, QUEBEC, CANADA
[2] MONTREAL GEN HOSP, DEPT NEUROL, MONTREAL, QUEBEC, CANADA
[3] CLARKE INST PSYCHIAT, TORONTO, ONTARIO, CANADA
[4] ROY VICTORIA HOSP, DEPT MED, MONTREAL, QUEBEC, CANADA
[5] MCGILL UNIV, PROT & POLYPEPTIDE HORMONE LAB, MONTREAL, QUEBEC, CANADA