Jadoon, S. ., A. Hussain, S. . Shaheen, N. Q. . Hayat, S. . Javed, and H. . Imtiaz. “Effects of Cigarette Smoke and Electronic Cigarette Vapors on Lung Histomorphology: A Comparative Study in Rats”. Pakistan Journal of Chest Medicine, vol. 29, no. 2, June 2023, pp. 215-22, https://pjcm.net/index.php/pjcm/article/view/820.