1. Department of Gastroenterology; Hepatology and Endocrinology; Hannover Medical School; Hannover Germany
2. Department of Gastroenterology; Ankara University Medical Faculty; Ankara Turkey
3. Institute for Biostatistics; Hannover Medical School; Hannover Germany
4. Institute of Clinical Chemistry; Hannover Medical School; Hannover Germany
5. Clinical Institute of Pathology; Medical University of Vienna; Vienna Austria
6. German Center for Infectious Disease Research (DZIF); Partner Site Hannover-Braunschweig; HepNet Study-House; Hannover Germany