MOHAMMAD, A. M.; SGERY, A. S. H. Heterologous COVID-19 Vaccination; Sinopharm and Pfizer-BioNTech. Iraq Medical Journal, [S. l.], v. 5, n. 4, 2021. DOI: 10.22317/imj.v5i4.1146. Disponível em: https://iraqmedj.org/index.php/imj/article/view/1146. Acesso em: 5 may. 2024.