1. Department of Internal Medicine and Therapeutics, Pediatrics and Adolescent Unit , University of Pavia , Pavia , Italy
2. Department of Pediatrics , Children's Hospital “V. Buzzi” , Milan , Italy
3. Assistance Publique-Hôpitaux de Paris, Service d’Endocrinologie et Diabétologie Pédiatrique, Hôpital Robert-Debré , Paris , France
4. French Clinical Research Group in Adolescent Medicine and Health , Paris , France
5. Laboratory of Clinical Chemistry , Foundation IRCCS San Matteo , Pavia , Italy
6. Department of Clinical Medicine and Surgery , Federico II University , Naples , Italy
7. Department of Pediatrics , Hospital “San Giovanni Battista” , Foligno , Italy
8. Adolfo Ferrata Medical Library , University of Pavia , Pavia , Italy
9. Department of Pediatrics, Unit of Pediatrics and Infectious Diseases , Bambino Gesù Children Hospital IRCCS , Rome , Italy
10. University of Pavia , Pavia , Italy
11. Onlus Il bambino e il suo pediatra , Novara , Italy