1. Jemal A, Tiwari RC, Murray T, Ghafoor A, Samuels A, Ward E, Feuer EJ, Thun MJ (2004) Cancer statistics, 2004. CA Cancer J Clin 54: 8?29.
2. National Center for Health Statistics. Mortality Data from the National Vital Statistics System. Available at: http://www.cdc.gov/ nchs/about/major/dvs/desc.htm.
3. Merrill RM, Capocaccia R, Feuer EJ, Mariotto A (2000) Cancer prevalence estimates based on tumour registry data in the surveillance, epidemiology, and end results (SEER)program. Int J Epidemiol 29: 197?207.
4. Ries LAG, Eisner MP, Kosary CL, Hankey BF, Miller BA, Clegg L, Mariotto A, Fay MP, Feuer EJ, Edwards BK eds. (2003) SEER Cancer Statistics Review, 1975?2000, National Cancer Institute. Bethesda, MD;Available at: http://seer.cancer.gov/csr/ 1975_2000, 2003.
5. National Program of Cancer Registries, Cancer Prevention and Control, Centers for Disease Prevention and Control, 2004. Available at: http://www.cdc.gov/cancer/npcr/.