[1] Univ Naples Federico II, Sch Med, Dept Clin & Expt Med, I-80131 Naples, Italy
[2] Univ Naples Federico II, Sch Med, Dept Gen Surg, I-80131 Naples, Italy
[3] Univ Naples Federico II, Sch Med, Dept Neurosci, Clin Pharmacol Sect, I-80131 Naples, Italy
[4] ASL BN1 Benevento, Dept Gen Surg, I-80131 Naples, Italy