1. Auxology Division; S. Giuseppe Hospital, Research Institute; Istituto Auxologico Italiano (Italian Auxological Institute); Verbania
2. Department of Pediatrics; A. Manzoni Hospital; Lecco
3. Division of Pediatric Endocrinology; Department of Pediatrics; University of Turin; Turin
4. Autoimmune Endocrine Diseases Unit; Bambino Gesù Children's Hospital, Research Institute; Palidoro-Rome
5. Clinical Analysis Laboratory; S. Giuseppe Hospital, Research Institute; Istituto Auxologico Italiano, Verbania (Italian Auxological Institute); Verbania
6. Department of Pediatrics; S. Raffaele Hospital, Research Institute; Milan
7. Department of Pediatrics; Civic Hospital of Treviglio; Treviglio
8. Department of Pediatrics, Department of Pediatric Endocrinology; Oasi Maria S.S., Research Institute; Troina
9. Department of Pediatrics; University of Insubria; Vares
10. Department of Nephrology; A. Manzoni Hospital; Lecco; Italy