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Authors
Zhang, Rui
He, Huaiwu
Yun, Long https://orcid.org/0000-0002-9196-4651
Zhou, Xiang
Wang, Xu
Chi, Yi
Yuan, Siyi
Zhao, Zhanqi
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Article History
Received: 9 October 2019
Accepted: 25 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: The ethics review board of Peking Union Medical College Hospital approved the study protocol, and written informed consent was obtained from all participants before enrollment.
: Not applicable
: Zhanqi Zhao receives a consulting fee from Dräger Medical. All other authors declare that they have no competing interests.
