Published on in Vol 8, No 6 (2020): June
![Case-Initiated COVID-19 Contact Tracing Using Anonymous Notifications Case-Initiated COVID-19 Contact Tracing Using Anonymous Notifications](https://asset.jmir.pub/assets/9e71ffb4a8a70908c256c254e7fdc080.png 480w,https://asset.jmir.pub/assets/9e71ffb4a8a70908c256c254e7fdc080.png 960w,https://asset.jmir.pub/assets/9e71ffb4a8a70908c256c254e7fdc080.png 1920w,https://asset.jmir.pub/assets/9e71ffb4a8a70908c256c254e7fdc080.png 2500w)
1 Institute for Healthcare Artificial Intelligence Application, Guangdong Second Provincial General Hospital, Guangzhou, China
2 Department of Medical Statistics and Sun Yat-sen Global Health Institute, School of Public Health & Institute of State Governance, Sun Yat-sen University, Guangzhou, China
3 Health Information Research Center and Guangdong Key Laboratory of Medicine, School of Public Health, Sun Yat-sen University, Guangzhou, China