1. Interdisciplinary Center of Ultrasound Diagnostics, University Hospital of Giessen and Marburg, Campus Marburg, Marburg, Germany
2. Department of General Internal Medicine, Hirslanden Klinik Beau-Site, Bern, Switzerland
3. Gastroenterology, Endocrinology, Metabolism and Clinical Infectiology, University Hospital of Giessen and Marburg, Campus Marburg, Marburg, Germany
4. Haematology, Oncology and Immunology, University Hospital of Giessen and Marburg, Campus Marburg, Marburg, Germany