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Authors
Wu, Laidi
Xue, Kaiyang
Hu, Guang
Du, Hanman
Gan, Kang
Zhu, Juanfang
Du, Tianfeng
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Article History
Received: 1 April 2021
Accepted: 9 August 2021
First Online: 18 August 2021
Declarations
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: This study was approved by Medical Ethics Committee of the First Affiliated Hospital of Zhengzhou University and was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Not applicable.
: Written informed consent was obtained from the legal guardians of minor subjects prior to sample collection.
: The authors declare that they have no conflicts of interests.
