1. Visceral Surgery DepartmentGeneva University Hospital Genève Switzerland
2. Department of Visceral and Vascular SurgeryUniversity of Cologne Cologne Germany
3. Department of Surgical Gastroenterology and Center of Excellence for Upper Gastro Intestinal SurgeryMadras Medical College and Rajiv Gandhi Government General Hospital Chennai India
4. Department of General, Visceral and Transplantation SurgeryUniversity Hospital Heidelberg Heidelberg Germany
5. Department of SurgeryParacelsus Medical University Salzburg Austria
6. Department of General SurgeryUniversity of Verona Verona Italy
7. Department of SurgeryRoyal Marsden Hospital London UK