An easy-to-use model for screening type 2 myocardial infarction in geriatric patients with acute coronary syndrome: a retrospective cohort study - Yun-yue Luo; Hui Wang; Xiao-ya Ma; Yue Li; Wu-lin Li; Yue Liu; Yu-xin Wang; Wen-hui Kang; Jian-jun Xia; Fei Wang (Frontiers in Medicine, 2026)