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Authors
Bi, Yonghua
Shi, Xiaonan
Ren, Jianzhuang
Yi, Mengfei
Han, Xinwei http://orcid.org/0000-0002-8411-6427
Song, Min
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Article History
Received: 7 October 2020
Accepted: 16 May 2021
First Online: 21 May 2021
Declarations
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: This study was approved by the Ethics Committee of The First Affiliated Hospital of Zhengzhou University. Informed consent was waived due to its retrospective nature.
: Written informed consents were obtained from the patients for publication. A copy of the written consent is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.
