1. Visiting Professor, Service d'anesthésie, Institut Gustave-Roussy, Villejuif, France, and Associate Professor, Department of Anesthesia, McGill University, Montréal, Canada.
2. Attending anesthesiologist, Service d'anesthésie, Institut Gustave Roussy, Villejuif, France.
3. Resident in Anesthesia, Institut Gustave Roussy, Villejuif, France.