RT Journal Article SR Electronic T1 Comment on: A comparative study of online learning in response to the Coronavirus disease 2019 pandemic versus conventional learning. JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1153 OP 1154 DO 10.15537/smj.2021.42.10.20210599 VO 42 IS 10 A1 Sang Yeoup Lee A1 Min Gi Shin A1 Si Gyoung Yu A1 Da Woon Jung YR 2021 UL http://smj.org.sa/content/42/10/1153.abstract AB