Effect of Isosorbide Mononitrate on Exercise Tolerance and Quality of Life in Patients with Heart Failure with Preserved Ejection Fraction 
DING Liqun*,LIU Chao,FAN Jie,ZHANG Jin,ZHANG Xi,GAO Tian,LIU Rui,GUO Jia
Chinese General Practice . 2020, (7): 832 -836 .  DOI: 10.12114/j.issn.1007-9572.2019.00.707