Madhulatha, G., N. Venkateswarlu, S. Das, and V. . “Estimations of Various Antioxidants in Oral Cancer Patients in Comparison With Smokers and Non-Smokers - a Biochemical Study”. International Journal of Research in Medical Sciences, vol. 5, no. 11, Oct. 2017, pp. 4743-8, doi:10.18203/2320-6012.ijrms20174645.