1. Amagasa T, Yamashiro M, Ishikawa H (2006) Oral leukoplakia related to malignant transformation. Oral Sci Int 3:45–55
2. Arima Y, Nishigori C, Takeuchi T, Oka S, Morimoto K, Utani A, Miyachi Y (2006) 4-nitroquinoline 1-oxide forms 8-hydroxydeoxyguanosine in human fibroblasts through reactive oxygen species. Toxicol Sci 91:382–392
3. Badea V, Balaban D, Amariei C, Nuca C, Bucur L (2010) Salivary 8-hidroxy-2-deoxy guanosine as oxidative stress biomarker for the diagnosis of periodontal disease. Farmacia 58:660–670
4. Bahar G, Feinmesser R, Shpitzer T, Popovtzer A, Nagler RM (2007) Salivary analysis in oral cancer patients. DNA and protein oxidation, reactive nitrogen species and antioxidant profile. Cancer 109:54–59
5. Banoczy A, Gintner Z, Dombi C (2001) Tobacco use and oral leukoplakia. J Dental Edu 65:322–327