1. Institute of Human Genetics University of Bonn Bonn Germany
2. Department of Genomics Life & Brain Center University of Bonn Bonn Germany
3. Department of Medicine II Sana Klinikum Offenbach Germany
4. Department of Internal Medicine II Evangelisches Krankenhaus Düsseldorf Germany
5. Department of Interdisciplinary Endoscopy University Hospital Hamburg‐Eppendorf Hamburg Germany
6. Departments of Gastroenterology and Interdisciplinary Endoscopy Vivantes Wenckebach‐Kinikum Berlin Germany
7. Department of General, Visceral and Cancer Surgery University of Cologne Cologne Germany
8. Institute of Pathology Klinikum Bayreuth Bayreuth Germany
9. Gastroenterologie am Burgweiher Bonn Germany
10. Department of Visceral Transplant Thoracic and Vascular Surgery University Hospital of Leipzig Leipzig Germany
11. Department of Internal Medicine II HSK Hospital Wiesbaden Germany
12. Department of Gastroenterology Hepatology and Infectious Diseases Otto‐von‐Guericke University Hospital Magdeburg Germany
13. Magen Darm Zentrum Wiener Platz Cologne Germany
14. Department of General Visceral and Transplant Surgery University Medical Center University of Mainz Mainz Germany
15. Department of General, Visceral and Thoracic Surgery University Medical Center Hamburg‐Eppendorf University of Hamburg Hamburg Germany
16. First Department of Internal Medicine University Medical Center University of Mainz Mainz Germany
17. Departments of General and Visceral Surgery Sana Klinikum Offenbach Germany
18. Department of General, Visceral and Transplantation Surgery University of Heidelberg Heidelberg Germany
19. Department of General, Visceral and Thorax Surgery RoMed Klinikum Rosenheim Rosenheim Germany
20. Gastropraxis Wiesbaden Germany
21. Departments of Internal Medicine and Gastroenterology Elisabeth Hospital Essen Germany
22. Departments of Gastroenterology and Interventional Endoscopy St. John of God Hospital Regensburg Germany
23. Gastroenterologische Gemeinschaftspraxis Koblenz Germany
24. Institute for Medical Biometry Informatics and Epidemiology University of Bonn Bonn Germany