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Authors
Zhang, Lei
Wang, Laixu
Yu, Shiyang
Lv, Zhanhui
Zhang, Peng
Fan, Cunyi
Shen, Yixin https://orcid.org/0000-0002-3525-9579
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Article History
Received: 10 June 2019
Accepted: 13 September 2019
First Online: 8 November 2019
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Binzhou Central Hospital: No. 20161018023. Informed consent was obtained from all individual participants included in the study according to the rules of the hospital research ethical committee.
: Not applicable. No conflict of interest exists in the submission of this manuscript, and the manuscript is approved by all authors for publication.
: The authors declare that they have no competing interests.
