1. University of California San Diego La Jolla CA USA
2. Clarunis, Department of Visceral Surgery University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel Basel Switzerland
3. Department of Surgery Kantonsspital St. Gallen 9007 St. Gallen Switzerland
4. Department of Surgery Hirslanden Clinic Beau Site Bern Switzerland
5. Department of Surgery Duke University Durham USA
6. Swiss Institute for Translational and Entrepreneurial Medicine Stiftung Lindenhof Campus SLB Bern Switzerland