1. Medical Department I/Gastroenterology, Sana Hospital Lichtenberg, 10365 Berlin, Germany
2. Department Allgemeine Innere Medizin (DAIM), Kliniken Hirslanden Beau Site, Salem und Permanence, 3013 Bern, Switzerland
3. Department of Internal Medicine, Krankenhaus Märkisch-Oderland, 15344 Strausberg, Germany
4. Brandenburg Institute for Clinical Ultrasound (BICUS), Medical University Brandenburg, 16816 Neuruppin, Germany
5. Thane Ultrasound Center, Thane 400601, India
6. Jaslok Hospital & Research Centre, Mumbai 400026, India
7. Inselspital, University of Bern, 3010 Bern, Switzerland
8. Department of Ultrasound, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China