1. University of Alberta; Department of Surgery; Edmonton Canada
2. University of Alberta; Edmonton AB Canada
3. Royal Alexandra Hospital; Center for the Advancement of Minimally Invasive Surgery, Department of Surgery; Edmonton AB Canada T5H 3V9
4. University of Alberta; Department of Surgery, Divisions of General Surgery and Critical Care Medicine; 2D3.79 WMC, University of Alberta Hospital, 8440-112th Street NW Edmonton AB Canada T6G 2B7