1. Gastro Unit Division of Endoscopy Copenhagen University Hospital Herlev Herlev Denmark
2. Department of Pathology Copenhagen University Hospital Herlev Herlev Denmark
3. Gastro Unit Division of Surgery Copenhagen University Hospital Hvidovre Herlev Denmark
4. Department of Pathology Copenhagen University Hospital Rigshospitalet København Denmark
5. Department of Gastrointestinal Surgery Copenhagen University Hospital Rigshospitalet København Denmark