Tran, Toan Khanh, Son Nguyen Truong, Loan Tran Thanh, Ngoc Le Hoang Gia, Hieu Pham Trung, and Binh Tran Dinh. “Post-COVID Condition: A Survey of Patients Recovered from COVID-19 in Central Vietnam”. The Journal of Infection in Developing Countries 17, no. 09 (September 30, 2023): 1213–1220. Accessed May 17, 2024. https://www.jidc.org/index.php/journal/article/view/37824353.