1. Jemal A, Murray T, Samuels A, Ghafoor A, Ward E, Thun MJ. Cancer statistics, 2003. CA Cancer J Clin 2003;53:5–26.
2. Ries L, Smith MA, Gurney JG. Cancer incidence and survival among children and adolescents: United States SEER Program 1975–1995. Bethesda: National Cancer Institute, 1999.
3. U.S._Cancer Statistics Working Group. United States Cancer Statistics: 2000, Incidence. Atlanta, GA: Department of Health and Human Services, Centers for Disease Control and Prevention and National Cancer Institute, 2003.
4. Sandler DP. Epidemiology and etiology of leukemia. Curr Opin Oncol 1990;2:3–9.
5. Zipursky A, Poon A, Doyle J. Leukemia in Down syndrome: a review. Pediatr Hematol Oncol 1992;9:139–149.