1. Research Foundation Papa Giovanni XXIII Hospital; Bergamo Italy
2. Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
3. Institute of Pathology; University of Cologne; Cologne Germany
4. Division of Hematology; University of Pavia, I.R.C.C.S. Policlinico San Matteo; Pavia Italy
5. Division of Hematology; Medical University of Vienna; Vienna Austria
6. Division of Hematology; San Bortolo Hospital; Vicenza Italy
7. Division of Hematology; University of Padua; Padua Italy
8. Division of Hematology; Papa Giovanni XXIII Hospital; Bergamo Italy
9. Division of Hematology; Mayo Clinic; Rochester Minnesota
10. Division of Hematology; Ospedale Di Circolo E Fondazione Macchi; Varese Italy