Combination of inspiratory and expiratory muscle training in same respiratory cycle versus different cycles in COPD patients: a randomized trialWenhui Xu, Xin Chen, Luqian Zhou et al.|Respiratory Research|2018Cited by 45
Comparison of the clinical characteristics and comprehensive assessments of the 2011 and 2017 GOLD classifications for patients with COPD in ChinaYuhe Hu, Xin Chen, Zhenyu Liang et al.|International Journal of COPD|2018Cited by 10
<p>Identification of relevant variables and construction of a multidimensional index for predicting mortality in COPD patients</p>Limei Xu, Xin Chen, Chun‐Quan Ou et al.|International Journal of COPD|2019Cited by 4