The cytochrome P450 2D6 G1934A gene polymorphism and risk of childhood lymphoblastic leukemia - Andrade, V. S. S.; Canalle, R.; Queiroz, Rosane Gomes de Paula; Defavery, R.; Scrideli, C. A.; Tone, Luiz Gonzaga (Congress Meeting of the International Society of Pediatric Oncology-SIOP, 2004)