1. AFO Medicina, P.O. Santa Maria delle Grazie, Pozzuoli, ASL Napoli2 nord, 80076 Napoli, CAP, Italy
2. Department of Infectious Disease, PO Cotugno, AO dei Colli, 80131 Naples, CAP, Italy
3. Department of Internal Medicine, General Medicine Unit, Thrombotic and Haemorrhagic Disorders Unit, University Hospital of Padua, 35128 Padua, CAP, Italy