1. Department of General, Visceral, and Transplantation Surgery; University Hospital of RWTH Aachen; Aachen Germany
2. Liver Center and The Transplant Institute, Division of Gastroenterology, Department of Medicine; Beth Israel Deaconess Medical Center, Harvard Medical School; Boston Massachusetts
3. Department of Visceral, Transplant, Thoracic and Vascular Surgery; University Hospital Leipzig; Leipzig Germany
4. Departmentof Surgery; Charité - Universitätsmedizin Berlin; Berlin Germany
5. Department of General- and Visceral surgery; Helios Clinic Leipzig; Leipzig Germany
6. Department of Hepato-, Pancreato- and Biliary Surgery; 310Klinik Nürnberg; Nuremberg Germany
7. Section of Hepatology, Department of Internal Medicine, Neurology, Dermatology; University Hospital Leipzig; Leipzig Germany
8. Center for Population and Development Studies; Harvard University; Cambridge Massachusetts
9. Hospital for Children and Adolescents; University Hospital Leipzig; Leipzig Germany