[This corrects the article DOI: 10.2196/24555.].
©Lu Zhang, Howard L McLeod, Ke-Ke Liu, Wen-Hui Liu, Hang-Xing Huang, Ya-Min Huang, Shu-Sen Sun, Xiao-Ping Chen, Yao Chen, Fang-Zhou Liu, Jian Xiao. Originally published in JMIR mHealth and uHealth (https://mhealth.jmir.org), 13.09.2021.