Khuu, Nghia V, Thuong V Nguyen, Hau P Tran, Phuc D Nguyen, Thinh X Vu, Ton Tran, Diep T.B. Vu, et al. 2018. “Viral Load Testing to Monitor the HIV Epidemic Among PWID in Vietnam”. Online Journal of Public Health Informatics 10 (1). https://doi.org/10.5210/ojphi.v10i1.8991.