1. Department of Pediatrics, University of L’Aquila, L’Aquila, Italy
2. Pediatric Unit, University of L’Aquila, L’Aquila, Italy
3. Digestive Endoscopy and Surgery Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
4. Department of Pediatrics, University of Catania, Catania, Italy
5. Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy
6. Department of Child Neuropsychiatry, Salesi Hospital Ancona, Italy
7. Child Neuropsychiatry Unit, Department of Mental Health, ASST-LARIANA, COMO