Published on in Vol 5, No 3 (2019): Jul-Sep
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13083, first published
.
1 Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, China (Hong Kong)
2 Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Shatin, China (Hong Kong)