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Effect of PIFR-based optimised inhalation therapy in patients recovering from acute exacerbation of chronic obstructive pulmonary disease: protocol of a prospective, multicentre, superiority, randomised controlled trial
Hua, Jianlan, Zhang, Wei, Cao, Hui-fang, Du, Chun-ling, Ma, Jia-yun, Zuo, Yi-hui, Zhang, JingVolume:
10
Journal:
BMJ Open
DOI:
10.1136/bmjopen-2019-034804
Date:
May, 2020
File:
PDF, 397 KB
2020