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Authors
Jiang, Xiao
Liu, Zhijun
Qi, Xijuan
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Article History
Accepted: 9 October 2020
First Online: 5 November 2020
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: General Hospital of Ningxia Medical University Ethics Committee approved this study (GHNMU2018050625532). All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Written informed consent was obtained from all individual participants included in the study.
