Funding for this research was provided by:
National Natural Science Foundation of China (71904033)
Humanity and Social Science Youth Foundation of Ministry of Education of China (19YJCZH227)
Humanity and Social Science Foundation of Department of Education of Guangdong Province (2020WTSCX009)
Humanity and Social Science Foundation of Guangzhou University of Chinese Medicine (2020SKXK01)
Medical Scientific Research Foundation of Guangdong Province (A2019484)
Research Fund for Talented Scholars of Guangzhou University of Chinese Medicine (A1-AFD018)
Innovative Project of Guangzhou University of Chinese Medicine (2016KYTD08)
Received: 29 June 2020
Accepted: 23 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained, and the Human Research Ethics Committee approved the present study (registration number: 2016KYTD08).
: All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.
: The authors declare that they have no conflicts of interest to this work.