PERIYASAMY, Y. ., D. . SELVAM, and S. . CHANDRASEKAR. “Association Between Age and Gender of Patients Underwent Tooth Whitening Procedure”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 571-9, https://cibgp.com/au/index.php/1323-6903/article/view/962.