Published on in Vol 23, No 9 (2021): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/33534, first published
.
1 Graduate School of Education, Dongguk University, Seoul, Republic of Korea
2 Department of Radiation Oncology, Ansan Hospital, Korea University, Gyeonggido, Republic of Korea