1. Department of Pediatric Endocrinology, Regina Margherita Children's Hospital, Turin, Italy.
2. Postgraduate Program in Biomedical Sciences and Oncology, Department of Health and Pediatric Sciences, University of Turin, Turin, Italy.
3. Postgraduate School of Pediatrics, Department of Health and Pediatric Sciences, University of Turin, Turin, Italy.
4. Department of Health and Pediatric Sciences, University of Turin, Turin, Italy.