Sarfaraz, M. ., A. . Ali, and T. . Mirza. “Prevalence and Characteristics of Areca Nut Chewing Habit Among School Going Children in Karachi”. Journal of the Dow University of Health Sciences (JDUHS), vol. 8, no. 3, Dec. 2014, pp. 111-6, https://mail.jduhs.com/index.php/jduhs/article/view/1432.