1. Centre for the Advancement of Minimally Invasive Surgery, Royal Alexandra Hospital, University of Alberta, Rm 511 CSC, 10240 Kingsway Avenue, Edmonton, AB, Canada T6X 1R8
2. Department of Medicine, Division of Gastroenterology, Zeidler Ledcor Centre, University of Alberta, Edmonton, AB, Canada T6G 2X8
3. Rm 3656 West Wing, Peter Lougheed Hospital, 3500 26th Avenue NE, Calgary, AB, Canada T1Y 6J4