ESPARZA, Drs. José; NITSCHE, Andreas; DAMASO, Clarissa R. Investigations on the historical origin and evolution of the smallpox vaccine. Gaceta Médica de Caracas, [S. l.], v. 128, n. 1S, p. S88-S97, 2020. Disponível em: https://saber.ucv.ve/ojs/index.php/rev_gmc/article/view/20443. Acesso em: 17 nov. 2025.