Mohiuddin, S., S. Saadat, and N. . Nisar. “Oral Health Knowledge and Oral Hygiene Practices Among Private and Public School Teachers of Karachi City”. Journal of the Dow University of Health Sciences (JDUHS), vol. 9, no. 2, Aug. 2015, pp. 64-70, https://jduhs.com/index.php/jduhs/article/view/1457.