1. Translational Research Center for Gastrointestinal Disorders; KULeuven & Department of Gastroenterology and Hepatology; University Hospital Leuven; Leuven Belgium
2. Gastroenterology Department; University Hospital “St Spiridon”; Gr. T.Popa University of Medicine and Pharmacy; Iasi Romania
3. 2nd Medical Dept.; Iuliu Hatieganu University of Medicine and Pharmacy; Cluj-Napoca Romania
4. Wingate Institute of Neurogastroenterology; Barts and The London School of Medicine and Dentistry; London UK
5. Department of Gastroenterology; University Hospitals of North Midlands; Stoke on Trent UK
6. Medizinische Universität Wien; Universitätsklinik für Innere Medizin 3; Vienna Austria
7. Department of Medicine; Unit of Gastroenterology; Haukeland University Hospital; Bergen Norway
8. Department of Human Molecular Genetics; University of Heidelberg; Heidelberg Germany
9. Division of Gastroenterology and Hepatology; University Hospital Zurich; Zurich Switzerland
10. Institute for Genetic Engineering and Biotechnology; University of Sarajevo; Sarajevo Bosnia and Herzegovina
11. Department of Internal Medicine and Clinical Nutrition; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
12. Center for Functional Gastrointestinal and Motility Disorders; University of North Carolina at Chapel Hill; Chapel Hill NC USA
13. Department of Internal Medicine; Martin-Luther-Krankenhaus; Berlin Germany
14. Department of Medicine; Mater Dei Hospital; Tal-Qroqq Malta
15. Uni Research Health; Research Unit for General Practice; Bergen Norway
16. Leeds Institute of Biomedical and Clinical Sciences; University of Leeds and Leeds Gastroenterology Institute; Leeds Teaching Hospitals Trust; Leeds UK
17. Centre for Gastrointestinal Sciences; University of Manchester; Manchester UK
18. Division of Gastroenterology and Hepatology; Mayo Clinic; Jacksonville FL USA