Received: 29 January 2019
Accepted: 12 February 2020
First Online: 3 April 2020
Ethics approval and consent to participate
: Ethics approval for this study protocol has been obtained from the Ethics Committee of Yueyang Integrated Traditional Chinese and Western Medicine Hospital, Shanghai University of Traditional Chinese Medicine (No. 2016-059). Each of the local ethics committees will comply with central ethical approval confirmed by the Ethics Committee of Yueyang Integrated Traditional Chinese and Western Medicine Hospital. Recruitment of other centers must be approved by the central ethics review before proceeding. Informed consent will be obtained from all study participants before the clinical trial communicators begin to collect any data. All patients will provide their consent in writing before participating in the study. Besides the investigators, no one can access the final data.
: All authors gave their consent for publication.
: The authors declare that have no competing interests.