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Authors
Wu, Xining
Niu, Zihan
Xu, Zhonghui
Jiang, Yuxin
Zhang, Yixiu
Meng, Hua
Ouyang, Yunshu
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Article History
Received: 23 February 2021
Accepted: 19 April 2021
First Online: 8 May 2021
Declarations
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: This study was approved by the Ethics Committee of Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (HS-1420). All informed consents were signed by the participants. We declare that all methods of this research were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki).
: Not applicable.
: The authors declare there are no competing interests.
