1. Division of Colon and Rectal Surgery Jewish General Hospital Montreal Quebec Canada
2. Division of General Surgery Hôpital Cité de la Santé Montreal Quebec Canada
3. Division of Colorectal Surgery Mount Sinai Hospital and School of Medicine New York New York USA
4. Department of Colorectal Surgery Cleveland Clinic Florida Weston Florida USA
5. Department of Epidemiology, Biostatistics, and Occupational Health McGill University Montreal Quebec Canada