Http://www.simed.org/. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 20, n. 1, p. 144, 2004. DOI: 10.32385/rpmgf.v20i1.10019. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10019. Acesso em: 19 apr. 2026.