Clinical observation of external diaphragm pacemaker combined with breathing exerciser in patients with stable COPD and type Ⅱ respiratory failure

WANG Yafeng, XIA Xiaoli△, MA Yanping, ZHANG Ning, WEI Caijie, MA Jiaojiao

Tianjin Medical Journal . 2022, (5): 498 -502 . DOI: 10.11958/20212368