Published on in Vol 7, No 7 (2019): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13261, first published
.
1 The George Institute for Global Health at Peking University Health Science Center, Beijing, China
2 Faculty of Medicine, University of New South Wales, Sydney, Australia
3 Public Health Graduate School of Medicine, Osaka University, Osaka, Japan
*these authors contributed equally