Chen, S., Gong, E., Kazi, D., Gates, A., Bai, R., Fu, H., … Schwalm, J. (2018). Using Mobile Health Intervention to Improve Secondary Prevention of Coronary Heart Diseases in China: Mixed-Methods Feasibility Study. JMIR MHealth and UHealth, 6(1), e9. https://doi.org/10.2196/mhealth.7849 (Original work published 2018)