Are Vaccines Effective and Safe for the Prevention of COVID-19 Infections? A Living Systematic Review. Acta Medica Philippina, [S. l.], v. 55, n. 2, 2021. DOI: 10.47895/amp.v55i2.2875. Disponível em: https://actamedicaphilippina.upm.edu.ph/index.php/acta/article/view/2875. Acesso em: 24 apr. 2025.