School failure. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 25, n. 6, p. 696–701, 2009. DOI: 10.32385/rpmgf.v25i6.10696. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10696. Acesso em: 18 apr. 2026.