1. Department of Psychiatry, The Montreal Children's Hospital, Montreal, Quebec; Department of Psychiatry, McGill University, Montreal, Quebec.
2. McGill University, Montreal, Quebec; Division of Research, Department of Child Psychiatry, McGill University, Montreal, Quebec; Adolescent Services, Montreal Children's Hospital, Montreal, Quebec.
3. Pavillon Albert-Prévost, Sacré-Coeur Hospital, Montreal, Quebec; Montreal Children's Hospital, Montreal, Quebec.