1. Endocrinology and Diabetes, Department of Medical Sciences; University of Cagliari; Italy
2. Paediatric Unit, San Michele Hospital; Cagliari Italy
3. Diabetes Paediatric Unit, San Michele Hospital; Cagliari Italy
4. Paediatric Unit, San Martino Hospital; Oristano Italy
5. Endocrinology, Department Experimental Medicine; Sapienza University of Rome; Italy
6. Internal Medicine Unit, Department of Internal Medicine and Medical Specialties; Sapienza University of Rome; Italy