Published on in Vol 6, No 2 (2018): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8687, first published
.
1 Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
2 VA Medical Center, San Francisco, CA, United States