Duong, Cong Thanh, Tran Hien Nguyen, Anh Tuan Nguyen, Thi Thanh Ha Hoang, Hong Thang Pham, Thi Thanh Ha Nguyen, Anh Tuan Le, et al. 2015. “Brief Behavioural Surveys in Routine HIV Sentinel Surveillance: A New Tool for Monitoring the HIV Epidemic in Viet Nam”. Western Pacific Surveillance and Response 6 (1). https://doi.org/10.5365/wpsar.2014.5.1.008.