George, R.S., Manjunath, N., V., M.B. and Bhat, K. 2017. Estimation of serum cortisol levels and its correlation with salivary cortisol levels in coronary artery disease patients with and without periodontitis: a cross sectional study. International Journal of Research in Medical Sciences. 5, 5 (Apr. 2017), 1930–1935. DOI:https://doi.org/10.18203/2320-6012.ijrms20171820.