1. Cancer statistics, 2017;Siegel;CA Cancer J Clin,2017
2. Howlader N Noone AM Krapcho M et al SEER Cancer Statistics Review, 1975-2013 National Cancer Institute Bethesda, MD http://seer.cancer.gov/csr/1975_2013/
3. Head and neck cancer - Part 1: epidemiology, presentation, and prevention;Mehanna;BMJ,2010
4. The role of human papillomavirus in nongenital cancers;Zandberg;CA Cancer J Clin,2013
5. Tongue and tonsil carcinoma: increasing trends in the US population ages 20-44 years;Shiboski;Cancer,2005