Ginting, Silvana R. R., Bahagia Loebis, and Vita Camellia. “Factors Associated With Anxiety Scores in Patients With Stable Angina Pectoris in Cardiology Outpatient Clinic of Universitas Sumatera Utara Hospital”. Open Access Macedonian Journal of Medical Sciences 10, no. T7 (April 7, 2022): 100–103. Accessed May 5, 2024. https://oamjms.eu/index.php/mjms/article/view/9253.