1. Cumming School of Medicine, University of Calgary, Department of Surgery, South Health Campus, 4448 Front St SE, Calgary, AB T3M1M4, Canada
2. Cumming School of Medicine, University of Calgary, Alberta Health Services, G33-1403 29 ST NW, Calgary, AB T2N 2T9, Canada
3. Cumming School of Medicine, University of Calgary, Department of Surgery, Foothills Medical Centre, Alberta Health Services, 1403 29th ST NW, Calgary, AB T2N 2T9, Canada
4. Cumming School of Medicine, University of Calgary, Alberta Health Services, Department of Surgery, South Health Campus, 4448 Front St SE, Calgary, AB T3M1M4, Canada