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Authors
Gu, Xinjin
Zhou, Ruiquan
Li, Chenggang
Liu, Rong
Zhao, Zhiming
Gao, Yuanxing
Xu, Yong
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Article History
Received: 17 November 2018
Accepted: 8 May 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: The study protocol was approved by Ethics Committee of Chinese People’s Liberation Army General Hospital (Beijing, China). Each participant provided written informed consent to be included in the study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
