1. Senior Lecturer in Anaesthesia, Department of Anaesthesia, Beaumont Hospital, Dublin, Ireland
2. Associate Clinical Professor of Anesthesiology, Department of Anesthesia, University of California Davis Medical Center, Sacramento, California
3. Professor of Anesthesia, Department of Anesthesia, University of California, San Francisco
4. Specialist, Department of Epidemiology and Biostatistics, University of California, San Francisco