1. Gastro Unit, Division of Endoscopy, Herlev Hospital, Herlev, Denmark
2. Department of Surgery, Rigshospitalet, Copenhagen, Denmark
3. Department of Radiology, Rigshospitalet, Copenhagen, Denmark
4. Gastro Unit, Pancreatitis Centre East, Hvidovre Hospital, Hvidovre, Denmark
5. Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark