The national immunization program and health care reform. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 23, n. 4, p. 409–15, 2007. DOI: 10.32385/rpmgf.v23i4.10385. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10385. Acesso em: 19 apr. 2026.