1 Department of Internal Medicine, Hematology Division, Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Faculdade de Medicina University of São Paulo Sao Paulo Brazil.
2 Department of Pharmacology, Institute of Biomedical Sciences University of São Paulo Sao Paulo Brazil.
3 Sylvester Comprehensive Cancer Center University of Miami Miller School of Medicine Miami Florida USA.
4 Department of Pathology St. Jude Children's Research Hospital Memphis Tennessee USA.
5 Center of Excellence for Leukemia Studies St. Jude Children's Research Hospital Memphis Tennessee USA.