1. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada.
2. Department of Psychiatry, McGill University, Montreal, Quebec, Canada.
3. Department of Psychology, Virginia Commonwealth University, Richmond, Virginia, USA.
4. Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
5. School of Social Work, McGill University, Montreal, Quebec, Canada.
6. Department of Medicine, McGill University, Montreal, Quebec, Canada.
7. Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada.
8. Department of Psychology, McGill University, Montreal, Quebec, Canada.