1. Cancer.net. Head and Neck Cancer: Statistics. Retrieved from https://www.cancer.net/cancer-types/head-and-neck-cancer/statistics (2017).
2. seer.cancer.gov. Cancer Stat Facts: Cancer of Any Site. Retrieved from https://seer.cancer.gov/statfacts/html/all.html (2014).
3. seer.cancer.gov. 5-Year Relative Survival By Year Dx, By Cancer Site, All Ages, All Races, Both Sexes, 1975-2013. Retrieved from https://seer.cancer.gov/faststats/selections.php?series=cancer (2013).
4. Human papillomavirus and rising oropharyngeal cancer incidence in the United States;Chaturvedi;J Clin Oncol,2011
5. Case-control study of human papillomavirus and oropharyngeal cancer;D'Souza;N Engl J Med,2007