Published on in Vol 22, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17996, first published
.
1 Graduate School of Culture Technology, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
2 Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
3 Advanced Institute of Convergence Technology, Suwon, Republic of Korea