Factors associated with tobacco use in patients with asthma during the confinement due to COVID-19 in an urban region with high numbers of SARS-CoV-2 infections. Revista Alergia México, [S. l.], v. 68, n. 4, p. 218–224, 2021. DOI: 10.29262/ram.v68i4.922. Disponível em: https://www.revistaalergia.mx/ojs/index.php/ram/article/view/922. Acesso em: 24 sep. 2026.