1. Department of Gastroenterology, Hepatology and Endocrinology; Hannover Medical School; Hannover Germany
2. Integrated Research and Treatment Center Transplantation (IFB-Tx); Hannover Germany
3. Department of Infectious Diseases and Hepatology; Medical University Bialystok; Bialystok Poland
4. Department of General, Visceral, and Transplantation Surgery; Hannover Medical School; Hannover Germany