Anh, T. T. L. ., Duong, T. N. ., Huong, N. T. T. ., Di, N. T. ., Hien, N. T. ., Linh, P. T. T. ., Ngoc, P. T. B. ., & Thai, P. Q. . (2022). Surveillance on illegal immigrants detected in the community under COVID-19 prevention and control activities in Vietnam - China border provinces from February to July 2020. Tạp Chí Y học Dự phòng, 31(10), 5–11. https://doi.org/10.51403/0868-2836/2021/488