1. Division of Hematology; Department of Medicine; Mayo Clinic; Rochester Minnesota
2. Laboratorio Congiunto MMPC; Department of experimental and clinical medicine; University of Florence; Florence Italy
3. Division of Cytogenetics; Mayo Clinic; Rochester Minnesota
4. Division of Hematopathology; Mayo Clinic; Rochester Minnesota
5. Division of Hematology; Genetic Unit, Medical Genetic and Cytogenetics Laboratory, SSD, SMEL, University Hospital Ospedale di Circolo e Fondazione Macchi; Varese Italy