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Authors
Liu, Fang
Wang, Zheng
Cao, Xia
Pan, Yingxia
Zhang, Erqiang
Zhou, Jiahuan
Zheng, Lina
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Article History
Received: 18 January 2021
Accepted: 19 April 2021
First Online: 27 April 2021
Declarations
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: This study was approved by the Ethics Committee of Kaifeng Central Hospital, Chinese Academy of Medical Sciences, and all human subjects signed informed consent before participating in this study. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that there are no conflicts of interest.
