1. Section of Endocrinology, Department of Medicine and Aging Sciences, Ce.S.I.-Me.T., “G. D’Annunzio” University of Chieti-Pescara, Chieti, Italy
2. Section of Endocrinology, University of Insubria, Varese, Italy
3. Section of Endocrinology Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
4. Division of Immunology, Department of Pathology, The Johns Hopkins School of Medicine, Baltimore, MD, USA