Funding for this research was provided by:
Beijing Municipal Science & Technology Commission (D171100003217003)
Received: 21 March 2020
Accepted: 16 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: The protocol has been approved by the local ethical committees of Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine (reference: DZMEC-KY-2017-53-02). We will conduct the study according to the principles of the Declaration of Helsinki. Written informed consent will be obtained before randomization from all participants.
: Not applicable.
: All authors have no conflicts of interest to declare.