Prevalence of asthma and symptoms association degree in the school population of “Sierra Norte de Puebla”. Revista Alergia México, [S. l.], v. 66, n. 2, p. 178–183, 2019. DOI: 10.29262/ram.v66i2.539. Disponível em: https://ojs.revistaalergia.mx/ojs/index.php/ram/article/view/539. Acesso em: 23 sep. 2026.