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Authors
Yu, Shasha
Guo, Xiaofan
Yang, Hongmei
Zheng, Liqiang
Sun, Yingxian
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Article History
Received: 14 May 2019
Accepted: 14 September 2019
First Online: 9 October 2019
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: The study was approved by the Ethics Committee of China Medical University (Shenyang, China, AF-SDP-07-1, 0-01). All procedures were performed in accordance with ethical standards.
: Written consent was obtained from all participants after they had been informed of the objectives, benefits, medical items and confidentiality agreement regarding their personal information.
