Received: 22 June 2019
Accepted: 29 June 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: The Ethics Committee of Shanghai Pudong Hospital of TCM reviewed this study protocol and gave its approval and consent on 11 October 2018 (approval code pdzyyy-2018-21). We assure that written informed consent will be obtained from all study participants.
: Signing the informed consent form indicates the individual participant should consent to have the data published. All authors read and approved the final manuscript.
: The authors declare that they have no competing interests.