Funding for this research was provided by:
The Capacity Building in Evidence-based Chinese Medicine and Internationalization Project by Beijing University of Chinese Medicine (No. 1000061020008)
Received: 2 June 2018
Accepted: 9 August 2018
First Online: 26 September 2018
Change Date: 14 January 2019
Change Type: Correction
Change Details: ᅟ
Ethics approval and consent to participate
: All data during this study drew from publicly available data and this study did not recruit human participants, so ethical approval was not required. Not applicable.
: The manuscript does not contain data from an individual person. Not applicable.
: The author JPL is the associate editor of the journal, but all authors declare that they have no competing interests.
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