1. From the Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada
2. Department of Anesthesiology and Pain Medicine, University of Toronto, St. Joseph’s Health Centre, Toronto, Ontario, Canada
3. Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto General Hospital, Toronto, Ontario, Canada
4. Environmental Compliance, Energy & Sustainability, University Health Network, Toronto, Ontario, Canada
5. Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada