1. Staff Anesthesiologist.
2. Professor, Head of Department.
3. Professor, Department of Anesthesiology and Critical Care Medicine, Rangueil Hospital, University Hospital of Toulouse, Toulouse, France.
4. Staff Surgeon, Department of Digestive Surgery, Estaing Hospital, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France.
5. Statistician, Department of Biostatistics, Centre Jean Perrin, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France
6. Professor.
7. Staff Anesthesiologist and Assistant Professor, Department of Anesthesiology and Critical Care Medicine.