1. Unit of Endocrinology, Department of Clinical and Experimental Medicine, Pisa University Hospital, 56124 Pisa, Italy
2. Endocrine Surgery Unit, Department of Surgical, Medical, Molecular Pathology and Critical Area, Pisa University Hospital, 56126 Pisa, Italy
3. Department of Surgical, Medical, Molecular Pathology and Critical Area, Anatomic Pathology Section, Pisa University Hospital, 56126 Pisa, Italy