1. Department of Gastroenterology; German Diagnostic Clinic; Wiesbaden Germany
2. Department of General and Abdominal Surgery; University Medical Center (UMC); Johannes Gutenberg University Hospital; Mainz Germany
3. Institute of Pathology; University Medical Center (UMC); Johannes Gutenberg University Hospital; Mainz Germany
4. 3rd Medical Clinic; University Medical Center (UMC); Johannes Gutenberg University Hospital; Mainz Germany
5. Institute of Human Genetics; University of Bonn; Bonn Germany
6. 1st Medical Clinic; University Medical Center (UMC); Johannes Gutenberg University Hospital; Mainz Germany