1 Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo & University of Pavia Medical School, 27100 Pavia, Italy. Electronic address: alessandrino@smatteo.pv.it.
2 Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo & University of Pavia Medical School, 27100 Pavia, Italy.