Published on in Vol 21 , No 10 (2019) :October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15966, first published
.
1 Korea University College of Medicine, Department of Psychiatry, Seoul, KR
2 Sungshin University, Department of Convergence Security Engineering, Seoul, KR
3 Korea University College of Informatics, Department of Computer Science and Engineering, Seoul, KR
*these authors contributed equally