1. Hematology, St. Eugenio Hospital, ASL Roma2, 00144 Rome, Italy
2. Department of Hematology-Oncology, Azienda Ospedaliera Pugliese-Ciaccio, 88100 Catanzaro, Italy
3. Department of Biomedicina e Prevenzione, Tor Vergata University, 00133 Rome, Italy