[1] Li Ka Shing Knowledge Institute of St. Michael’s Hospital,International Centre for Surgical Safety
[2] University of Toronto,Department of Vascular Surgery
[3] University of Toronto,Faculty of Medicine
[4] University of Copenhagen,Department of Obstetrics and Gynaecology, Juliane Marie Centre for Children, Women and Reproduction, Rigshospitalet
[5] St. Michael’s Hospital,Department of Perioperative Services
[6] St. Michael’s Hospital,Department of Anaesthesia
[7] University of Toronto,Department of Surgery
[8] University of Toronto,Department of Obstetrics and Gynaecology
[9] St. Michael’s Hospital,Department of Obstetrics and Gynaecology