Published on in Vol 22, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16981, first published
.
1 School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX, United States
2 Division of Gastroenterology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China