Published on in Vol 22, No 4 (2020): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13761, first published
.
1 The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, New Territories, China (Hong Kong)
2 Information Technology and Health Informatics Division, Hospital Authority, Hong Kong, China