Gene stage-specific expression in the microenvironment of pediatric myelodysplastic syndromes - Roela, Rosimeire Aparecida; Carraro, Dirce M.; Brentani, Maria Mitzi; Kaiano, Jane Haruko Lima; Simão, Daniel F.; Guarniero, Roberto; Lopes, Luiz Fernando; Borojevic, Radovan; Brentani, Helena P. (Leukemia Research, 2007)