1. COVID-19 Unit & Unit of Internal Medicine, Azienda Ospedaliero Universitaria S.Orsola Malpighi, Bologna, Italy
2. Radiological, Anatomo-pathological and Oncologic Sciences Department, Policlinico Umberto I, University La Sapienza, Rome, Italy
3. Department of Radiology, King’s College London. King’s College Hospital, London, UK
4. Radiology, Northeastern Ohio Medical University, USA
5. Hepatology, University Clinic for visceral surgery and medicine, Inselspital, University of Bern, Switzerland
6. Ultrasound Division of Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
7. Department of Adult Radiology, Paris University & Necker University Hospital, Paris, France
8. Kliniken Hirslanden Beau Site, Salem und Permanence, Bern, Switerzeland
9. Rush Universty Medical Center, Chicago, USA
10. Department of Ultrasound in Medicine,the Second Affiliated Hospital of Zhejiang University School of Medicine, China
11. Department of Internal Medicine, Krankenhaus Märkisch-Oderland, Strausberg, and Brandenburg Institute for Clinical Ultrasound (BICUS), Medical University Brandenburg, Neuruppin, Germany
12. Department of Medicine, Radiology, University of California, San Diego, USA
13. Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Japan
14. Interventional Ultrasound Department, Chinese PLA General Hospital, Beijing, China
15. Radiology Unity, Thomas Jefferson University Hospital, Philadelphia, USA
16. Centre for Surgical Ultrasound, Dep of Surgery, Zealand University Hospital, Køge, Copenhagen Denmark
17. Institute of Diagnostic and Interventional Ultrasound The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China