1. Department of Diagnostic and Interventional Radiology, Hannover Medical School; Hannover Germany
2. Division of Radiology; Karolinska University Hospital; Stockholm Sweden
3. Division of Gastroenterology and Hepatology, Department of Internal Medicine III; Medical University of Vienna; Vienna Austria
4. Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School; Hannover Germany
5. Department of Medicine and Martin Zeitz Centre for Rare Diseases; University Medical Centre Hamburg-Eppendorf; Hamburg Germany
6. Department of Gastroenterology and Hepatology; University Hospital Essen; Essen Germany