1. Institute of Nutritional Medicine University of Hohenheim Stuttgart Germany
2. Department of Medical, Technological and Translational Sciences University of Trieste Trieste Italy
3. Department of Medicine University of Padova Padova Italy
4. Department of Gastroenterology and Hepatology University Medical Centre Groningen Groningen The Netherlands
5. Department of Medico‐Surgical Sciences and Biotechnologies Sapienza University of Rome Rome Italy
6. Department of Gastroenterology Rambam Health Care Campus Affiliated with Technion‐Israel Institute of Technology Haifa Israel
7. Department of Gastroenterology and Hepatology Avicenna Hospital Shiraz Iran
8. Department of Gastroenterology Marmara University School of Medicine Istanbul Turkey
9. Hepato‐Gastroenterology Department Mohammed VI University Hospital Oujda Morocco
10. Laboratoire de Recherche des Maladies Digestives (LARMAD) Mohammed the First University Oujda Morocco
11. Department of Nutrition Rennes Hospital Rennes France
12. Department of general surgery Mantes‐la‐Jolie Hospital France
13. Department of clinical nutrition Paul Brousse‐Hospital, Villejuif France
14. Department of Endocrinology and Nutrition University Hospital Doce de Octubre Medical School University Complutense Madrid Spain
15. La Mina Primary Care Academic Health Centre. Catalan Institute of Health (ICS) University of Barcelona Barcelona Spain
16. Department of General and Visceral Surgery Regionale Kliniken Holding Kliniken Ludwigsburg‐Bietigheim gGmbH Bietigheim‐Bissingen Germany
17. Medizinische Klinik II Klinikum Bremen‐Mitte Bremen Germany
18. Department of Hepatology & Gastroenterology Charité Universitätsmedizin Berlin Campus Virchow‐Klinikum and Campus Charité Mitte Berlin Germany
19. Department of Clinical Science Danderyds Hospital Karolinska Institutet Stockholm Sweden
20. Department of Surgery Ersta Hospital Stockholm Sweden
21. Department of Internal Medicine Unit of Clinical Nutrition University Hospital Centre Zagreb Zagreb Croatia
22. Department of General, Visceral and Oncological Surgery St. George Hospital Leipzig Germany
23. Departamento de Medicina Universidad Complutense de Madrid Nutrition Unit Hospital General Universitario Gregorio Marañón Madrid Spain