1. Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
2. Department of Surgical, Medical, Molecular Pathology and of Emergency, University of Pisa, Pisa, Italy
3. Department of Medical, Surgical, Maternal, Pediatric and Adult Sciences, University of Modena & Reggio Emilia, Modena, Italy
4. Department of Clinical and Experimental Medicine, Section of Endocrinology, University of Messina, Messina, Italy