1 Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, and Twincore Centre for Experimental and Clinical Infection Research, Hannover, Germany.
2 Unit for Experimental Hepatology and Cell Transplantation, Department of Biochemistry Faculty of Medicine, University of Valencia and CIBEREHD, IIS University Hospital "La Fe", Valencia, Spain. Electronic address: jose.castell@uv.es.