1. Department of Surgery; Catharina Hospital; Eindhoven The Netherlands
2. Tytgat Institute for Liver and Intestinal Research; Department of Gastroenterology; Academic Medical Center; Amsterdam The Netherlands
3. Department of Surgery; VU Medical Center; Amsterdam The Netherlands
4. Department of Surgery; Zuyderland Medical Center; Sittard-Geleen The Netherlands
5. Institute MHeNS; Maastricht University; Maastricht The Netherlands