1. Department of Radiology, King’s College Hospital, London, United Kingdom.
2. Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I, University Sapienza, Rome, Italy.
3. Department of Internal Medicine 2, Caritas Krankenhaus, Bad Mergentheim, Bad Mergentheim, Germany.
4. Department of Radiology, Parc Tauli University Hospital, Sabadell, Spain.
5. Pediatric Sonography, Department of Pediatric Kidney, Liver and Metabolic Diseases, Children's Hospital, Hannover Medical School, Hannover, Germany
6. Department of Radiology, Heim Pal Children’s’ Hospital, Budapest, Hungary
7. Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, Gdansk, Poland
8. Department of Emergency Radiology, S. Camillo Hospital, Rome, Italy
9. Department of Radiology, Medical University of Gdansk, Gdansk, Poland
10. National Centre for Ultrasound in Gastronterology, Haukeland University Hospital, Bergen and Department of Clinical Medicine, University of Bergen, Norway.