Published on in Vol 24 , No 6 (2022) :June
Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/37677, first published .
1 Rock Health Inc, San Francisco, CA, US
2 Department of Public Health and Primary Care, University of Cambridge, Cambridge, GB
3 Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, US
4 Division of Gastroenterology & Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, US