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Muhammad Zahid Ali Raza, Aamir Siddique, Shaoib Ahmed Zia, Tayyab Mohyuddin, Arslan Aslam Chahudhary, Faiza Altaf. Comparative Study of Beta-Blockers Versus Calcium Channel Blockers in the Management of Stable Angina in Elderly Patients. Pakistan Journal of Medical & Health Sciences 2023, 17, 172.