Warfarin or Aspirin for stroke prevention in the elderly with Atrial Fibrillation?. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 23, n. 6, p. 803, 2007. DOI: 10.32385/rpmgf.v23i6.10434. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10434. Acesso em: 19 apr. 2026.