COPD in the population under surveillance by the Portuguese Sentinel Practice Network from 2007 to 2009. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 28, n. 4, p. 250–60, 2012. DOI: 10.32385/rpmgf.v28i4.10953. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10953. Acesso em: 17 apr. 2026.