Published on in Vol 20, No 4 (2018): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9667, first published
.
1 Hinge Health, Inc, San Francisco, CA, United States
2 Department of Orthopaedic Surgery, Stanford University Medical Center, Stanford University, Stanford, CA, United States
*these authors contributed equally