AUTHOR=Zhu Wei-wei , Tian Run-Yu , Guo Di-chen , Lin Ming-ming , Cai Qi-zhe , Qin Yun-yun , Ding Xue-yan , Lv Xiu-zhang TITLE=Exercise intolerance in patients with chronic coronary syndrome: insights from exercise stress echocardiography JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2024.1442263 DOI=10.3389/fcvm.2024.1442263 ISSN=2297-055X