1. Department of Anaesthesia, Foch Hospital, Suresnes, France
2. Outcomes Research Consortium, Cleveland Clinic, Cleveland, OH, USA
3. Department of Anaesthesia, Cisanello Hospital, Pisa, Italy
4. Department of Thoracic Surgery, Foch Hospital, Suresnes, France
5. Department of Pneumology, Foch Hospital, Suresnes, France