ZHENG Qinghou, XU Weiwei, WANG Zhen, LIU Jun, GAO Lei, TAN Huilian, LIU Ling. Influencing factors of myocardial perfusion after percutaneous coronary intervention in elderly patientsJ. Journal of Clinical Medicine in Practice, 2017, (11): 8-11. DOI: 10.7619/jcmp.201711003