AHMED, Naseer; MAQSOOD, Afsheen; ABDULJABBAR, Tariq; VOHRA, Fahim. Tobacco Smoking a Potential Risk Factor in Transmission of COVID-19 Infection: COVID-19 transmission and tobacco smoking. Pakistan Journal of Medical Sciences, [S. l.], v. 36, n. COVID19-S4, 2020. DOI: 10.12669/pjms.36.COVID19-S4.2739. Disponível em: https://pjms.org.pk/index.php/pjms/article/view/2739. Acesso em: 10 dec. 2025.