Funding for this research was provided by:
the Guangdong Province Science and Technology Planning Project (2017A050506041, 2017B030314166)
the Guangdong Provincial Department of Education Project (2018KQNCX046)
the Guangzhou Science and Technology Project (201807010051)
the Guangdong Provincial Hospital of Chinese Medicine Special Fund (YN2018RBA02, YN2019QJ08, YN2018ZD08, YN2018HK01, YN2016XP02, YN2019QJ04)
Received: 17 December 2019
Accepted: 13 March 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of Guangdong Provincial Hospital of Chinese Medicine Clinical Research Ethics Committee (Ethical approval No. B2012-53-03) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all eligible participants.
: Not applicable.
: The authors declare that they have no competing interests.