1. Department of Gastroenterology Pomeranian Medical University Szczecin Poland
2. Department of Cell Biology Faculty of Biochemistry, Biophysics and Biotechnology Jagiellonian University Cracow Poland
3. Department of Laboratory Diagnostics and Molecular Medicine Pomeranian Medical University Szczecin Poland
4. Division of Hepatobiliary Surgery and Liver Transplantation Marie Curie Hospital Szczecin Poland
5. Department of Physiology Pomeranian Medical University Szczecin Poland
6. Stem Cell Institute at the James Graham Brown Cancer Center University of Louisville Louisville KY USA