[This corrects the article DOI: 10.2196/29226.].
©Tao Zhong, Zian Zhuang, Xiaoli Dong, Ka Hing Wong, Wing Tak Wong, Jian Wang, Daihai He, Shengyuan Liu. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 13.08.2021.