1 Division of Hematology, Azienda Ospedaliera Universitaria Senese, Policlinico "Santa Maria alle Scotte", Viale Bracci 16, 53100, Siena, Italy. gozzetti@unisi.it.
2 Division of Hematology, Azienda Ospedaliera Universitaria Senese, Policlinico "Santa Maria alle Scotte", Viale Bracci 16, 53100, Siena, Italy.
3 Unit NINT Neuroimaging and Neurointervention, Department of Neurological and Sensorineural Sciences, Azienda Ospedaliera Universitaria Senese, Policlinico "Santa Maria alle Scotte", Siena, Italy.