Leghari, Mohammad Ali, et al. “CONSUMPTION OF ARECA NUT WITH OR WITHOUT TOBACCO IN NON-TEACHING STAFF OF A PRIVATE MEDICAL UNIVERSITY IN KARACHI”. Pakistan Oral & Dental Journal, vol. 39, no. 3, Oct. 2019, pp. 267-9, https://www.podj.com.pk/index.php/podj/article/view/435.