1. Department of General, Visceral and Transplant Surgery; University Hospital Tübingen; Tübingen Germany
2. Hepato-Biliary Radiological Unit; Department of Imaging; Bambino Gesù Children's Hospital; Rome Italy
3. Department of Pediatric Surgery; Bambino Gesù Children's Hospital; Rome Italy
4. Telemedicine Unit; Bambino Gesù Children's Hospital; Rome Italy
5. Università di Roma Tor Vergata; Rome Italy