Funding for this research was provided by:
National Natural Science Foundation of China (81873327)
Natural Science Foundation of Guangdong Province (2015A030313353)
Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China (YB201802)
Science and Technology Project of Guangzhou (201510010228)
Received: 17 April 2020
Accepted: 13 August 2020
First Online: 3 September 2020
Ethics approval and consent to participate
: This study was conducted in agreement with the Declaration of Helsinki and its later amendments or comparable ethical standards and had been approved by the ethics board of The First Affiliated Hospital of Guangzhou University of Chinese Medicine (No: ZYYECK《2018》017).
: Not applicable
: The authors declare no competing interests.