Funding for this research was provided by:
the National Natural Science Foundation of China (81501006)
Received: 9 August 2018
Accepted: 1 October 2018
First Online: 10 October 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of the First Affiliated Hospital of China Medical University approval, in accordance with the principles of the Helsinki Declaration. Written informed consents were obtained from all the participants.
: Not applicable.
: The authors declare that they have no competing.
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