1. Karolinska Institutet, Department of Medicine Solna, Karolinska University Hospital, Centre for Digestive Health, Department of Gastroenterology, Dermatovenereology and Rheumatology, Stockholm, Sweden
2. Division of Gastroenterology and Hepatology, Department of Medicine, Danderyd Hospital, Danderyd, Sweden
3. Gastroenterology Unit, Medical Department, St Göran’s Hospital, Stockholm, Sweden
4. Department of Medicine, South Hospital, Stockholm, Sweden
5. Medical Library at Danderyd Hospital, Danderyd, Sweden
6. Department of Upper Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
7. Janssen-Cilag AB, Stockholm, Sweden
8. Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden Gastroenterology Unit, Medical Department, St Göran’s Hospital, Stockholm, Sweden
9. Karolinska Institutet, Department of Medicine Solna, Karolinska University Hospital, Centre for Digestive Health, Department of Gastroenterology B4:09, Dermatovenereology and Rheumatology, SE-171 76 Stockholm, Sweden