Max Testing:a Preliminary Experimental Report of a Clinical Approach to Verify whether Individualized Symptoms Limit Cardiopulmonary Exercise Testing is the Maximum Extreme Exercise 
ZHANG Ye,SUN Xingguo,HAO Lu,LIU Qin,ZOU Yuxin,WANG Ruolan,SONG Ya,GE Wangang,ZHANG Tianjing,LIU Fang,XING Ran,MA Lanyu,LI Hao,CI Zheng,ZHAI Wenxuan,LIU Yanling
Chinese General Practice . 2019, (20): 2441 -2447 .  DOI: 10.12114/j.issn.1007-9572.2019.00.146