Preethi, N. R., and P. V. Nandini. “Serum Levels of Selected Antioxidants and Lipid Profile of Smokers”. The Indian Journal of Nutrition and Dietetics, vol. 42, no. 11, Nov. 2005, pp. 514-21, https://informaticsjournals.co.in/index.php/ijnd/article/view/6360.