1. Clinical Research Fellow, Department of Anesthesia, Hôpital Saint-Eloi, Centre Hospitalier Universitaire Montpellier.
2. Assistant in Anesthesiology, Department of Anesthesia, Hôpital Saint-Eloi, Centre Hospitalier Universitaire Montpellier.
3. Resident in Anesthesiology, Department of Anesthesia, Hôpital Saint-Eloi, Centre Hospitalier Universitaire Montpellier.
4. Statistician, Department of Biostatistics, Faculty of Medecine, Montpellier, France.
5. Professor of Surgery, Department of Surgery, Hôpital Saint-Eloi, Centre Hospitalier Universitaire Montpellier.
6. Professor of Anesthesiology, Department of Anesthesia, Hôpital Saint-Eloi, Centre Hospitalier Universitaire Montpellier.