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Hydrogen/oxygen therapy for the treatment of an acute exacerbation of chronic obstructive pulmonary disease: results of a multicenter, randomized, double-blind, parallel-group controlled trial
Received: 1 September 2020
Accepted: 6 May 2021
First Online: 13 May 2021
: The trial was approved by the local ethics committee of all participating centres. All recruited patients provided written informed consent before participating in the trial. The study was conducted in accordance with Declaration of Helsinki.
: Not applicable.
: Jin-Fu Xu is an Associate Editor of Respirology Research. All other authors (Ze-Guang Zheng, Wu-Zhuang Sun, Jie-Ying Hu, Zhi-Jun Jie, Jie Cao, Yuan-Lin Song, Chang-Hui Wang, Jing Wang, Hui Zhao, Zhong-Liang Guo, Nan-Shan Zhong) declare that they have no competing interests.