A stepwise approach to the treatment of knee pain in patients over 50. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 23, n. 4, p. 480–1, 2007. DOI: 10.32385/rpmgf.v23i4.10395. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10395. Acesso em: 19 apr. 2026.