Published on in Vol 7 , No 2 (2022) :Jul-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/26800, first published
.

1 Ona Systems Inc, Burlington, VT, US
2 Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, GB
3 Eijkman-Oxford Clinical Research Unit, Jakarta, ID