Published on in Vol 9, No 7 (2021): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/26149, first published
.
1 Mobile Health Systems Lab, Institute of Robotics and Intelligent Systems, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
2 Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland