CHELLAPPA, L. R. ., LEELAVATHI, L., & JAYASHRI, P. (2021). Age and gender distribution of community periodontal index of treatment needs - a record-based study. The Journal of Contemporary Issues in Business and Government, 27(2), 2324–2335. Retrieved from https://cibgp.com/au/index.php/1323-6903/article/view/1137