Funding for this research was provided by:
Development Funds from Beijing University of Chinese Medicine
National Programme on Key Basic Research Project (2013CB532001)
Text and Data Mining valid from 2019-01-23
Received: 3 May 2018
Accepted: 16 January 2019
First Online: 23 January 2019
Ethics approval and consent to participate
: Ethical approval was not necessary in the current meta-analysis because our meta-analysis only gathered RCTs from a literature search; hence, this procedure did not require any personal data and did not harm any patient.
: Not applicable.
: The authors declare that they have no competing interests.
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