1. Department of Internal Medicine, Gastroenterology, Hepatology, Infectiology, Nephrology, Endocrinology & Diabetology, University Hospital of Bonn, 53127 Bonn, Germany
2. Division of Functional Genomics, Chair for Biochemistry and Molecular Medicine, University of Witten/Herdecke, 58453 Witten, Germany
3. Department of General, Visceral and Vascular Surgery, Marienhospital Brühl, 50321 Brühl, Germany
4. Center for Biochemical Education and Research (ZBAF), University of Witten/Herdecke, 58453 Witten, Germany
5. Department of Urology, Helios University Hospital Wuppertal, University of Witten/Herdecke, 42283 Wuppertal, Germany