1 Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, CIUSSS de l'Est de l'Ile de Montreal, University of Montreal, Montreal, Canada.
2 Department of Anesthesiology and Pain Medicine, University of Montreal, Montreal, Québec, Canada.
3 Department of General Surgery, Maisonneuve-Rosemont Hospital, CIUSSS de l'Est de l'Ile de Montreal, University of Montreal, Montreal, Canada.