The research protocol. Part I. Revista Alergia México, [S. l.], v. 62, n. 4, p. 312–317, 2015. DOI: 10.29262/ram.v62i4.129. Disponível em: https://ojs.revistaalergia.mx/ojs/index.php/ram/article/view/129. Acesso em: 23 sep. 2026.