1. Department of Internal Medicine II; HSK Hospital, Teaching Hospital of the University Medicine of Mainz; Wiesbaden Germany
2. Department of Internal Medicine II/IV; Sana Klinikum Offenbach, Teaching Hospital of the University Medicine of Frankfurt; Germany
3. Department of General and Visceral Surgery; Sana Klinikum Offenbach, Teaching Hospital of the University Medicine of Frankfurt; Germany
4. Department of Gastroenterology and Interventional Endoscopy; St. John of God Hospital; Regensburg Germany
5. Institute of Pathology, HSK Hospital; Wiesbaden Germany
6. Institute of Pathology, Kulmbach Hospital; Germany
7. Institute of Pathology, Bayreuth Hospital; Germany