1. Department of Endoscopy and Gastroenterology, Pavillon L, Edouard Herriot Hospital, Lyon, France
2. Department of Gastroenterology, Clinique de la Sauvegarde, Lyon, France
3. Department of Thoracic Surgery, Clinique de la Sauvegarde, Lyon, France
4. Department of Anesthesiology, Edouard Herriot Hospital, Lyon, France