RCT: randomized controlled trial; (1) patients were treated by DES; (2) patients with bifurcation lesions; (3) patients with coronary complex lesions; (4) patients with coronary short-length lesions; (5) patients were treated by PCI; (6) patients with coronary long lesions; (7) patients with coronary left main lesions; (8) patients with diffuse coronary artery disease; (9) patients with coronary bifurcation lesions; (10) patients with unprotected left main coronary artery lesions; (11) patients with chronic total occlusion; (12) patients with myocardial infarction.