1. UOSD Centro delle Microcitemie “A. Mastrobuoni”; AORN A. Cardarelli; Naples Italy
2. Department of Medicine and Surgery; University of Salerno; Salerno Italy
3. Department of Diagnostic Services; U.O.C., Biochemical Clinic; A.O.R.N. dei Colli Hospital; Italy
4. UOSD, Endocrinology; AORN A. Cardarelli; Naples Italy