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Authors
Zhang, Rui https://orcid.org/0000-0002-6251-2218
Yu, Shuhua https://orcid.org/0000-0001-8429-3856
Yu, Yin https://orcid.org/0000-0001-9392-0516
Xu, Guangzhi https://orcid.org/0000-0002-1233-9349
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Article History
Received: 18 February 2020
Accepted: 8 July 2020
First Online: 16 July 2020
Compliance with ethical standards
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: The study was approved by the Ethics Committee of Heilongjiang Provincial Hospital.
: The authors declare that they have no conflicts of interest.
