1. Associate Professor, Department of Anesthesia, Jewish General Hospital.
2. Associate Professor, Centre for Clinical Epidemiology and Community Medicine of the Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Quebec, Canada.
3. Associate Professor, Centre for Clinical Epidemiology and Community Medicine of the Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, and the Department of Mathematics and Statistics, McGill University.