Funding for this research was provided by:
National Natural Science Foundation of China (81671290)
Article History
Received: 17 February 2019
Accepted: 5 May 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: Informed consent is available from all subjects participating in this study. This study was approved by the Ethics Committee of the First Affiliated Hospital of Anhui Medical University.
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: The authors declare that they have no competing interests.
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