1. 1Division of Haematology and Oncology, Department of Medicine, Medical Faculty, University Rostock, 18057, Rostock, Germany
2. 2Frauenhofer-Institute of Biomedical Engineering, Group of Cell Differentiation and Cell Technology at the University of Lübeck, 23538, Lübeck, Germany
3. 3Division of Gastroenterology, Department of Medicine, Medical Faculty, University Rostock, 18057, Rostock, Germany