Funding for this research was provided by:
China Scholarship Council (201708210229)
New Teacher Grant of China Medical University (XZR20160003)
Received: 26 February 2018
Accepted: 24 October 2018
First Online: 7 November 2018
Ethics approval and consent to participate
: This work was reviewed and approved by Ethics Committees of No.1 Hospital of China Medical University (No. AF-SOP-07-1.0-01). All patients gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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