[This corrects the article DOI: 10.2196/27177.].
©Donghwan Yun, Semin Cho, Yong Chul Kim, Dong Ki Kim, Kook-Hwan Oh, Kwon Wook Joo, Yon Su Kim, Seung Seok Han. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 02.11.2021.