1. Department of Radiological Sciences, Oncology and Pathology; “SAPIENZA” University of Rome; I.C.O.T. Hospital; Latina Italy
2. Pathology Unit; Department of Medical Surgical Sciences and Biotechnologies; “SAPIENZA” University of Rome; I.C.O.T. Hospital; Latina Italy
3. School of Radiology; University of Genoa; Genoa Italy
4. Pelvic Floor Unit; I Department of Surgery; Regional Hospital; Treviso Italy
5. Unit of Gastroenterology; AUSL Bologna Maggiore Hospital; Bologna Italy
6. Department of Radiology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
7. Department of Radiology; Albert Schweitzer Hospital; Dordrecht The Netherlands