1. Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
2. University of Montreal Hospital Research Centre, Montreal, Quebec, Canada
3. Institut national de santé publique du Québec, Montreal, Quebec, Canada
4. Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada
5. Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada