Published on in Vol 8, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17652, first published
.
1 School of Information Science and Technology, Guangdong University of Foreign Studies, Guangzhou, China
2 Department of Big Data Research of Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
3 School of Business, Guangdong University of Foreign Studies, Guangzhou, China