[This corrects the article DOI: 10.2196/23272.].
©Sungkyu Park, Sungwon Han, Jeongwook Kim, Mir Majid Molaie, Hoang Dieu Vu, Karandeep Singh, Jiyoung Han, Wonjae Lee, Meeyoung Cha. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.03.2021.