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Authors
Zhou, Chenguang https://orcid.org/0000-0001-6413-5068
Xu, Zhiqiang
Huang, Botao
He, Yuanhong
Zhu, Yinghui
Zhao, Yuanzheng
Wang, Peng
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Funding
Funding for this research was provided by:
This work was supported by Key Research Program for Higher Education of Henan Province, China (ID 18A320071)
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Article History
Received: 25 May 2019
Accepted: 20 August 2019
First Online: 27 August 2019
Compliance with ethical standards
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: We declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: This retrospective study was approved by the Institutional Review Board of the affiliated hospital of the Fifth Affiliated Hospital of Zhengzhou University. All procedures performed in studies were in accordance with the ethical standards of the Institutional Review Board of the affiliated hospital of the Fifth Affiliated Hospital of Zhengzhou University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: In addition, the informed consent was waived due to the retrospective nature of the study.
