1. Department of Internal Medicine, Clinic for Gastroenterology, Endocrinology and Metabolic Disorders, Bayreuth, Germany;
2. Department of Medicine, Huddinge, Karolinska Institute, Stockholm, Sweden;
3. Department of Gastroenterology, Division of Internal Medicine, University Medical Centre Maribor, Maribor, Slovenia;
4. Gastroenterology and Digestive Endoscopy Department, Mater Olbia Hospital, Olbia, Italy;
5. Department of Abdominal Radiology, Karolinska University Hospital, Stockholm, Sweden;
6. Department of Clinical Science, Intervention, and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden;
7. Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden;
8. Department of Medicine Solna (MedS, K2), Division of Clinical Medicine, Karolinska Institute, Stockholm, Sweden