1. Department of Anesthesia, McGill University Health Centre, Montreal, Quebec, Canada
2. Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
3. Department of Pharmacological and Physiological Science, Saint Louis University, Saint Louis, Missouri, USA
4. Division of Clinical Epidemiology, McGill University Health Centre, Montreal, Quebec, Canada
5. Department of School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada