Relation between Preinfarction Angina and Coronary Collateral Circulation in Patients with Acute Myocardial Infarction. Althea Med J [Internet]. 2016 Mar. 27 [cited 2026 Jul. 22];3(1):29-33. Available from: https://journal.fk.unpad.ac.id/index.php/amj/article/view/709