Mahmood, Tahira, and Mukhtiar Zaman. “Comparative Assessment of Total Nicotine Content of the Cigarette Brands Available in Peshawar, Pakistan”. Pakistan Journal of Chest Medicine 16, no. 3 (June 6, 2015). Accessed May 30, 2026. https://pjcm.net/index.php/pjcm/article/view/142.