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Authors
Yang, Xue-Yong
Jing, Xiao-Yong
Chen, Zhe
Li, Lun
Fan, Xiang-Ming
Su, Jun-Wu
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Article History
Received: 27 October 2019
Accepted: 4 May 2020
First Online: 14 May 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the declaration of Helsinki. This study was conducted with approval from the Ethics Committee of Beijing Anzhen Hospital, Capital Medical University. Written informed consent was obtained from the guardians of the participants.
: N/A
: All authors declare that they have no competing interests.
