1. Hematology and Hemotherapy Center, Instituto Nacional de Ciência e Tecnologia do Sangue (INCTS), UNICAMP, Campinas, São Paulo, Brazil;
2. Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY; and
3. Departments of Medicine and
4. Gene and Cell Medicine, Mount Sinai School of Medicine, New York, NY