1. Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia , 41124 Modena , Italy
2. Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero-Universitaria of Modena , 41126 Modena , Italy
3. Center for Genomic Research, University of Modena and Reggio Emilia , 41126 Modena , Italy
4. Department of Laboratory Medicine and Anatomy Pathology, Azienda USL Modena , 41126 Modena , Italy