“Comparison of Combined Anticoagulant and Aspirin Treatment With Isolated Anticoagulant Treatment in Patients at Risk for Cardiovascular Disease”. Portuguese Journal of Family Medicine and General Practice 23, no. 4 (July 1, 2007): 478–9. Accessed April 21, 2026. https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10393.