1. Clinical Medicine Postgraduate Program; College of Medicine, Federal University of Rio de Janeiro; Rio de Janeiro Brazil
2. Cytogenetics Department, Bone Marrow Transplantation Unit; National Cancer Institute; Rio de Janeiro Brazil
3. Oncology Post Graduation Program; National Cancer Institute; Rio de Janeiro Brazil
4. Institute of Human Genetics; Jena University Hospital; Jena Germany
5. Institute of Pharmaceutical Biology, Diagnostic Center of Acute Leukemia; Goethe-University of Frankfurt; Frankfurt/Main Germany
6. Martagão Gesteira Institute of Pediatrics and Child Development; Federal University of Rio de Janeiro; Rio de Janeiro Brazil
7. Department of Oncology; St. Jude Children's Research Hospital, Memphis; Tennessee United States