Ullah, R., S. Ullah, R. Khan, M. Khan, I. Ullah, and R. Zulfiqar. “PREVALENCE AND ASSOCIATED RISK FACTORS OF DENTAL STAINS AMONG SCHOOL-GOING CHILDREN IN TALASH DIR (LOWER) KHYBER PAKHTUNKHWA”. Annals of Allied Health Sciences, Vol. 7, no. 2, Dec. 2021, pp. 52-55, http://aahs.kmu.edu.pk/index.php/aahs/article/view/121.