Zhang, Qianqian
Wang, Zheng
Lv, Yanping
Zhao, Jiang
Dang, Qiang
Xu, Dongfeng
Zhao, Dongxiang
Liu, Haiyang
Wang, Ziqi
Zhao, Xingru
Xu, Zhiwei
Zhang, Xiaoju
Article History
Received: 22 December 2020
Accepted: 28 January 2021
First Online: 13 February 2021
Compliance with ethical standards
:
: The authors declare no conflict of interest to this work.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The research was approved by the academic committees of each hospital, Zhengzhou University and Nanyang Medical College.
: Informed consent was obtained from all individual participants included in the study.
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