Anh, Tran Thi Lan, Tran Nhu Duong, Nguyen Thi Thu Huong, Nguyen Trong Di, Nguyen Tran Hien, Pham Thi Thuy Linh, Pham Thi Bich Ngoc, và Pham Quang Thai. 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.