Affiliation: | 1. Hospital of Internal Medicine, Haematology, Oncology, and Immunology, University Hospital Giessen and Marburg, Baldingerstra?e, Marburg, Germany;2. Hospital of Diagnostic and Interventional Radiology, University Hospital, Giessen and Marburg, Baldingerstra?e, Marburg, Germany;3. Interdisciplinary Center of Ultrasound, University Hospital Giessen and Marburg, Baldingerstra?e, Marburg, Germany;4. Department Gastroenterology and Gastrointestinal Oncology, University Medical Centre G?ttingen, G?ttingen, Germany |