Published on in Vol 7, No 4 (2019): Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13430, first published
.
1 Department of Software, Sejong University, Seoul, Republic of Korea
2 Department of Computer Science and Engineering, Oakland University, Rochester, MI, United States
3 Department of Computer Science and Engineering, Kyung Hee University, Yongin, Republic of Korea