Purwowiyoto, S. L., and S. P. Surya. “A Case of Malignant Course of Right Coronary Artery: Frequent Angina in Young Person”. Cardiovascular and Cardiometabolic Journal (CCJ), vol. 2, no. 2, Sept. 2021, pp. 90-94, doi:10.20473/ccj.v2i2.2021.90-94.