Published on in Vol 22, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/22299, first published
.
1 Baidu Research, Sunnyvale, CA, United States
2 School of Electrical Engineering & Computer Science, Oregon State University, Corvallis, OR, United States
*these authors contributed equally