Skin reactions to the Pfizer-BioNTech vaccine for COVID-19. An Ecuadorian experience. Revista Alergia México, [S. l.], v. 69, n. 1, p. 61–64, 2022. DOI: 10.29262/ram.v69i1.973. Disponível em: https://ojs.revistaalergia.mx/ojs/index.php/ram/article/view/973. Acesso em: 23 sep. 2026.