1. U.S. Cancer Statistics Working Group (2014) United States cancer statistics: 1999-2010 cancer incidence and mortality data.
2. Kosary CL, Ries LA, Miller BA, Hankey BF, Harras A, et al. (1995) SEER cancer statistics review. 1973- 1992 tables and graphs. pp. 17, 34, 542, 355, 361.
3. Altekruse SF, Kosary CL, Krapcho M, Neyman N, Aminou R, et al. (2010) SEER cancer statistics review, 1975-2007.
4. Murphy GP, Lawrence WJ, Lenhard REJ (1995) Textbook of clinical oncology. (2nd edn), Atlanta, GA: American Cancer Society.
5. Silverman S (2001) Demographics and occurrence of oral and pharyngeal cancers. The outcomes, the trends, the challenge. J Am Dent Assoc 132(Suppl): 7S-11S.