Childhood B lineage acute lymphoblastic leukemia clonality study by the polymerase chain reaction - Scrideli, Carlos Alberto; Simões, Aguinaldo Luíz; Defavery, Ricardo; Bernardes, José E; Duarte, Maria Herbênia Oliveira; Tone, Luíz Gonzaga (Journal of Pediatric Hematology/Oncology, 1997)