1. Italian National Cancer Institute G. Pascale Foundation Naples, Italy
2. Russian Institute of Pediatric Hematology Moscow, Russia
3. IST Genoa, Italy
4. 2nd Rome University Medical School Rome, Italy
5. Department of Veterans Affairs Samuel S. Stratton Medical Center Albany, NY
6. Cytogenetics Unit, Elena D'Aosta Hospital Naples, Italy
7. Institute of General Pathology University of Modena Medical School Modena, Italy