Published on in Vol 8, No 8 (2020): August
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18370, first published
.
1 School of Data Science, City University of Hong Kong, Kowloon, China (Hong Kong)
2 Centre for Systems Informatics Engineering, City University of Hong Kong, Kowloon, China (Hong Kong)