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Authors
Yang, H. J.
Li, Y. W.
Zhang, Z. X.
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Article History
Received: 12 February 2020
Accepted: 21 February 2020
First Online: 4 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All human studies have been reviewed by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in an appropriate version of the 1965 Declaration of Helsinki.
: Informed consent was obtained from all individual participants included in the study.
Free to read: This content has been made available to all.
