SHABAN, A.; DEMIREVSKA, L. Frailty and anticoagulation in patients with atrial fibrillation. Medical Review, Sofia, BG, v. 62, n. 5, p. 20–26, 2026. Disponível em: https://journals.mu-sofia.bg/index.php/mr/article/view/1131.. Acesso em: 14 sep. 2026.