1. Evidence-Based Medicine/Drug & Therapeutics Committee Resource, London Health Sciences Centre, Pharmacy Department, University Hospital, London, ON, Canada
2. Evidence-Based Medicine, London Health Sciences Centre, Victoria Hospital, London, ON, Canada
3. Department of Anesthesia & Perioperative Medicine, University of Western Ontario, London, ON, Canada
4. Department of Epidemiology & Biostatistics, University of Western Ontario, London, ON, Canada