Satoru Fujii1, Philip M Jones2,3. 1. Department of Anesthesiology, London Health Sciences Centre, University of Western Ontario, London, ON, Canada. satoru.fujii@lhsc.on.ca. 2. Department of Anesthesiology, London Health Sciences Centre, University of Western Ontario, London, ON, Canada. 3. Department of Epidemiology & Biostatistics, London Health Sciences Centre, University of Western Ontario, London, ON, Canada.