Zahid Khan, Tariq, Atif Hafiz, Zeba Ahmed, Salman Matiullah, and Muhammad Saleem Marfani. 2009. “Analysis of Causative Factors in Oral Cancer”. Journal of the Dow University of Health Sciences (JDUHS) 3 (3):108-13. https://jduhs.jduhs.duhs.edu.pk/index.php/jduhs/article/view/1342.