SAJJAD, F.; MUMTAZ, M.; SAJJAD, R. Effects of Tobacco Chewing and Smoking and Its Relationship with Periodontal Health. National Journal of Health Sciences, [S. l.], v. 2, n. 3, p. 106-108, 2020. Disponível em: https://ojs.njhsciences.com/index.php/njhs/article/view/120. Acesso em: 5 may. 2024.