Putra, Muhammad, Irsad Arso, Ira Puspitawati, and Anggoro Hartopo. “Serum Endothelin-1 Level >2.0 Pg/ML Associates With High-Risk Duke Treadmill Score Among Chronic Coronary Syndrome Patients”. Indonesian Journal of Cardiology 47, no. 3 (June 11, 2026): 272-278. Accessed October 3, 2026. https://www.arsip.ijconline.id/index.php/ijc/article/view/1907.