1 Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital and Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada.
2 Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital and Department of Epidemiology, Biostatistics, and Occupational Health and Department of Oncology, McGill University, Montreal, Quebec, Canada.
3 Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital and Department of Epidemiology, Biostatistics, and Occupational Health and Division of Clinical Epidemiology, Department of Medicine, McGill University, Montreal, Quebec, Canada.