1. Division of Hematology and Oncology, Department of Internal MedicineAmerican University of Beirut Medical Center Beirut Lebanon
2. Department of Clinical Sciences and Community HealthUniversity of Milan Milan Italy
3. Fondazione IRCCS Caʼ Granda Ospedale Maggiore Policlinico Milan Italy
4. Department of MedicineUniversity of Verona and Azienda ospedaliera Universitaria Intergrata Verona Italy