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Authors
Zhai, Qijin
Wang, Xiang
Chen, Chun
Tang, Yan
Wang, Yuqian
Tian, Jisha
Zhao, Ying
Liu, Xinfeng
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Article History
Received: 23 April 2019
Accepted: 13 July 2019
First Online: 22 July 2019
Compliance with Ethical Standards
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: The authors declare that they have no conflicts of interest.
: The study protocol was approved by the Ethical Committee of the Affiliated Huai’an Hospital of Xuzhou Medical University. The study was carried out according to the Declaration of Helsinki.
: Informed consent was obtained from participants or legal representatives.
