Human Papilloma virus immunization is cost effective if immunity is life-long, and if all 12-year old girls are immunized (in the USA). Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 24, n. 5, p. 641–2, 2008. DOI: 10.32385/rpmgf.v24i5.10555. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10555. Acesso em: 17 apr. 2026.