Published on in Vol 9 , No 5 (2021) :May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/26469, first published
.

1 Department of Biomedical Engineering, Chonnam National University, Yeosu, KR
2 BLACKYAK Co Ltd, Seoul, KR
*these authors contributed equally