1. Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada2Department of Oncology, McGill University, Montreal, Quebec, Canada
2. Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
3. Division of Urology, University of Montreal, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
4. Department of Oncology, McGill University, Montreal, Quebec, Canada