1. Oscar Langendorff Institute of Physiology Rostock University Medical Center Rostock Germany
2. Department of Surgery, Klinikum rechts der Isar, School of Medicine Technical University of Munich Munich Germany
3. Department of Gastroenterology Helios Hospital Krefeld Krefeld Germany
4. Department of Internal Medicine, Psychosomatic Medicine and Psychotherapy University Hospital Tübingen Tübingen Germany
5. Division of Medical Biology, Department of Psychiatry and Psychotherapy University Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
6. Department of Internal Medicine Israelite Hospital Hamburg Germany
7. Department of Human Molecular Genetics University Hospital Heidelberg Heidelberg Germany
8. Institute of Clinical Anatomy and Cell Analysis University of Tübingen Tübingen Germany