Supriya, K., Chaudhary, J. and Shamal, S.N. 2017. Oxidative stress in cigarette smoker and smokeless tobacco user among ethnic group north-eastern population of Uttar Pradesh, India. International Journal of Research in Medical Sciences. 5, 4 (Mar. 2017), 1439–1444. DOI:https://doi.org/10.18203/2320-6012.ijrms20171242.