1. A snapshot of head and neck cancer. Incidence and mortality. http://www.cancer.gov/researchandfunding/snapshots/headandneck [accessed 16.02.01].
2. Global cancer statistics 2012;Torre;CA Cancer J Clin,2015
3. SEER stat fact sheets: oral cavity and pharynx cancer. http://seer.cancer.gov/statfacts/html/oralcav.html [accessed 16.02.01].
4. SEER stat fact sheets: larynx cancer. http://seer.cancer.gov/statfacts/html/laryn.html [accessed 16.02.01].
5. Head and neck cancer;Argiris;Lancet,2008