[1] University Medical Center Utrecht,Dept. of Surgery
[2] Radboud University Nijmegen Medical Centre,Dept. of Surgery
[3] Academic Medical Center Amsterdam,Dept. of Surgery
[4] St Antonius Hospital Nieuwegein,Dept. of Radiology
[5] Jeroen Bosch Hospital,Dept. of Surgery
[6] Meander Medical Center Amersfoort,Dept. of Gastroenterology
[7] Maastricht University Medical Center,Dept. of Surgery
[8] VU Medical Center,Dept. of Gastroenterology
[9] St.Elisabeth Hospital,Dept. of Surgery
[10] Medical Center Alkmaar,Dept. of Surgery
[11] Onze Lieve Vrouwe Gasthuis,Dept. of Gastroenterology
[12] Reinier de Graaf Gasthuis,Dept. of Surgery
[13] Medical Center Leeuwarden,Dept. of Surgery
[14] University Medical Center Groningen,Dept. of Surgery
[15] St Antonius Hospital Nieuwegein,Dept. of Surgery
[16] Leiden University Medical Center,Dept. of Surgery
[17] Amphia Hospital,Dept. of Surgery
[18] Rijnstate Hospital,Dept. of Gastroenterology
[19] Canisius Wilhelmina Hospital,Dept. of Gastroenterology
[20] Isala Clinics,Dept. of Gastroenterology
[21] St Antonius Hospital Nieuwegein,Dept. of Gastroenterology
[22] Hospital Gelderse Vallei Ede,Dept. of Gastroenterology
[23] Radboud University Nijmegen Medical Centre,Dept. of OR/Evidence Based Surgery