1. Department of Endocrinology and Metabolism, University of Pisa, Pisa, Italy.
2. Department of Oncology, University of Pisa, Pisa, Italy.
3. Department of Surgery, University of Pisa, Pisa, Italy.
4. Department of Internal Medicine, Endocrinology and Metabolism, and Biochemistry, University of Siena, Siena, Italy.
5. Department of Endocrinology and Metabolism, and AMBISEN Center, High Technology Center for the Study of the Environmental Damage of the Endocrine and Nervous Systems, University of Pisa, Pisa, Italy.