Ola, O. T., A. O. Ogunwale, and D. B. Olawade. “Knowledge and perception of diabetes mellitus among civil servants in Oyo state, Nigeria”. Journal of Public Health and Development, vol. 19, no. 2, May 2021, pp. 135-50, https://he01.tci-thaijo.org/index.php/AIHD-MU/article/view/249755.