1. Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A et al (2021) Global cancer statistics 2020: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin 68:394. https://acsjournals.onlinelibrary.wiley.com/doi/abs/10.3322/caac.21660. Accessed 16 Feb 2021
2. Warnakulasuriya S, Greenspan JS (2020) Epidemiology of oral and oropharyngeal cancers. Springer, Cham. https://link.springer.com/chapter/10.1007/978-3-030-32316-5_2. Accessed 16 Feb 2021
3. WHO. IARC (n.d.) Cancer Today. http://gco.iarc.fr/today/home. Accessed 17 Feb 2021
4. Johnson DE, Burtness B, Leemans CR, Lui VWY, Bauman JE, Grandis JR (2020) Head, and neck squamous cell carcinoma. Nat Rev Dis Primer 6(1):1–22
5. Laronde DM (2008) Oral cancer: just the facts. J Can Dent Assoc 74(3):4