Article History
Received: 9 July 2017
Accepted: 17 October 2018
First Online: 29 October 2018
Ethics approval and consent to participate
: The Fourth Affiliated Hospital of China Medical University Clinical Research Ethics Committee approved this study (CREC Ref. No.:2006–004).Research ethics approval was obtained from each of the participating sites. All patients signed an informed consent prior to participate in this study.Individuals are not identified by the indirect information listed in the manuscript.
: The Fourth Affiliated Hospital of China Medical University Clinical Research Ethics Committee assessed that individuals would not be identified by the indirect information listed in the manuscript.
: The authors declare that they have no competing interests.
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