Published on in Vol 4, No 9 (2020): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19296, first published
.
1 eHealth Unit, Department of Primary Care and Population Health, University College London, Rowland Hill Street, United Kingdom
2 Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, 47 College St, New Haven, CT, United States