SETIATI, S.; MARSIGIT, J. COVID-19 Vaccine for Elderly: Should We Be Reactive or Proactive?. Acta Medica Indonesiana, [S. l.], v. 53, n. 1, p. 1, 2021. Disponível em: http://actamedindones.org/index.php/ijim/article/view/1766. Acesso em: 3 jul. 2026.