Koko Kwisda1,2, Tobias Cantz3,4, Nils Hoppe5,3. 1. CELLS - Centre for Ethics and Law in the Life Sciences, Leibniz University Hannover, Hannover, Germany. koko.kwisda@philos.uni-hannover.de. 2. REBIRTH-AG Translational Hepatology and Stem Cell Biology, Hannover, Germany. koko.kwisda@philos.uni-hannover.de. 3. REBIRTH-AG Translational Hepatology and Stem Cell Biology, Hannover, Germany. 4. Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany. 5. CELLS - Centre for Ethics and Law in the Life Sciences, Leibniz University Hannover, Hannover, Germany.