1. Department of Health Promotion Sciences Maternal and Infant Care, Section of Gastroenterology & Hepatology, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Italy
2. Inflammatory Bowel Disease Unit, A.O.O.R. Villa Sofia-Cervello Hospital, Palermo, Italy
3. Section of Gastroenterology, “S.Elia-Raimondi” Hospital, Caltanissetta, Italy
4. Gastroenterology and Endoscopy Unit, ARNAS Civico - Di Cristina - Benfratelli Hospital, Palermo,Italy
5. Radiology Unit, A.O.O.R. Villa Sofia-Cervello Hospital, Palermo, Italy