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Article History

Received: 18 December 2017

Accepted: 14 February 2018

First Online: 2 March 2018

Ethics approval and consent to participate

: This trial was approved by the ethics committee of Shuguang Hospital affiliated with Shanghai University of Traditional Chinese Medicine on 26 October 2016 (certificate number 2016-kykt-11). The purpose, procedures, and potential risks of the trial will be explained to the participants in advance. All participants should sign the informed consent form before taking part in the trial.

: All authors read and approved the final manuscript.

: The authors declare that they have no competing interests.

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