1. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, et al. (2010) GLOBOCAN 2008 v2.0, Cancer Incidence and Mortality Worldwide: IARC Cancer Base No. 10 [Internet]. Lyon: International Agency for Research on Cancer.
2. Tobacco smoke and involuntary smoking;IARC Monogr Eval Carcinog Risks Hum,2004
3. Betel-quid and areca-nut chewing and some areca-nut derived nitrosamines;IARC Monogr Eval Carcinog Risks Hum,2004
4. Alcohol consumption and ethyl carbamate;IARC Monogr Eval Carcinog Risks Hum,2010
5. Lifestyle risk factors for oral cancer;S Petti;Oral Oncol,2009