Published on in Vol 5 , No 12 (2017) :December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8764, first published
.

1 School of Public Health, University of Sydney, Camperdown, New South Wales, AU
2 China Studies Centre, University of Sydney, Camperdown, New South Wales, AU