1. Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
2. Department of Anesthesiology & Pain Medicine, University of Toronto, Toronto, ON M5G 0A8, Canada
3. Department of Medical Oncology and Hematology, University Health Network, Toronto, ON M5G 2C4, Canada
4. Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON M5G 1E2, Canada
5. Department of Anesthesia, University Health Network, Toronto, ON M5G 2C4, Canada
6. Hyperbaric Medicine Unit, Toronto General Hospital, Toronto, ON M5G 2C4, Canada
7. Department of Anesthesia, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada