1. Medical Department I/Gastroenterology, Sana Hospital Lichtenberg, 10365 Berlin, Germany
2. Department of Internal Medicine, Krankenhaus Märkisch-Oderland, 15344 Strausberg, Germany
3. Brandenburg Institute of Clinical Medicine, Medical University Brandenburg, 16816 Neuruppin, Germany
4. Biomedical Imaging Laboratory, UMR 7371-U114, University of Paris, 75006 Paris, France
5. Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
6. Department of Radiology, Ospedale di Cattinara, University of Trieste, 34149 Trieste, Italy
7. Department of Medical Gastroenterology, Julius-Spital, 97070 Würzburg, Germany
8. Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
9. Department of Radiology, Oncology, and Anatomy Pathology, “Sapienza” University of Rome, 00185 Rome, Italy
10. Department Allgemeine Innere Medizin, Hirslanden Klinik Beau-Site, 3013 Bern, Switzerland