Published on in Vol 9, No 5 (2021): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/25304, first published
.
1 School of Information Engineering, Zhengzhou University, Zhengzhou, China
2 The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
*these authors contributed equally