1. Department of Surgery, University of Toronto, Toronto, Ontario, Canada
2. Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada
3. Department of Surgery, St Michael’s Hospital, Toronto, Ontario, Canada
4. Department of Anesthesia, St Michael’s Hospital, Toronto, Ontario, Canada
5. Department of Anesthesia, University of Toronto, Toronto, Ontario, Canada
6. Li Ka Shing Knowledge Institute, St Michael’s Hospital, Toronto, Ontario, Canada
7. Department of Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
8. Department of Surgery, Women’s College Hospital, Toronto, Ontario, Canada
9. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
10. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
11. Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, Ontario, Canada
12. Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada