1. Department of Internal Medicine; IRCCS Policlinico San Matteo Foundation and University of Pavia; Pavia Italy
2. Division of Hematology; Careggi Hospital and University of Florence; Firenze Italy
3. Division of Hematology; Department of Internal Medicine; University of Patras Medical School; Patras Greece
4. Department of Medical, Surgical and Health Sciences; IRCCS Burlo Garofolo and University of Trieste; Trieste Italy