Relationship of Left Atrial Systolic Strain and Strain Rate Evaluated by Two-dimensional Speckle Tracking in Cardiac Resynchronization Therapy 
YANG Dongmei,HUANG Xiangyang,WANG Yuting,CHEN Kangyu,WANG Qi,XU Jian,YAN Ji
Chinese General Practice . 2020, (18): 2284 -2288 .  DOI: 10.12114/j.issn.1007-9572.2020.00.142