1Gastroenterology Unit, Department of Biomedical and Clinical Sciences, L. Sacco University Hospital, Milan, Italy
2National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen, Norway
3Radiology, Hospital Universitario Doctor Peset, Valencia, Spain
4Gastroenterology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Roma, Italy
5Gastroenterologie und Innere Medizin, Rems-Murr-Klinikum Winnenden, Germany
6Innere Medizin 2, Caritas-Krankenhaus, Bad Mergentheim, Germany
7Department of Radiology, Hospital Barmherzige Brüder, Salzburg, Austria
8Department of Gastroenterology and Hepatology, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
9Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy of Craiova, Romania
10Ambulanzzentrum Gastroenterologie, Klinikum Lüneburg, Germany
11Department of Medicine, Haukeland University Hospital, Bergen, Norway
12Department of Radiology, Queen Alexandra Hospital, Portsmouth Hospitals NHS Trust, Portsmouth, United Kingdom of Great Britain and Northern Ireland
13Gastroenterology, Ruppiner Kliniken, Neuruppin, Germany
14Department of Internal Medicine and Medical Specialties, Sapienza University of Rome, Roma, Italy
15Dept. of Radiology, Radiologia 1, Spedali Civili di Brescia, Italy
16Interventional Ultrasound Unit, Department of Organ Failure and Transplantations, Sant'Orsola-Malpighi Hospital and University of Bologna, Italy
17National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen and Department of Clinical Medicine, University of Bergen, Norway