Daily physical activity in patients living with COPD :a qualitative study
LUO Yuanrong,CHEN Miaoxia,WU Shaozhu,YU Xueying,QU Fenglei
Chinese General Practice . 2020, (21): 2635 -2641 .  DOI: 10.12114/j.issn.1007-9572.2020.00.007