1. Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood “G. Barresi,” University of Messina, Messina, Italy
2. Sicilian Regional Pharmacovigilance Center, University Hospital of Messina, Messina, Italy
3. Italian Medicines Agency, Rome, Italy
4. Department of Medicine, University of Messina, Messina, Italy