“Effect of Aspirin on the International Normalized Ratio in Elderly Patients with Atrial Fibrillation on Concurrent Warfarin Therapy”, Sarawak J Pharm, vol. 9, no. 1, pp. 20–30, May 2023, Accessed: Mar. 22, 2026. [Online]. Available: https://sjpharm.org/ojs/index.php/sjp/article/view/40