V. D. Nguyễn, T. H. L. Lê, T. T. T. Lê, and T. P. Trương, “THE CHANGES IN HEPATITIS B SURFACE ANTIGEN (HBsAg) LEVELS IN PATIENTS WITH CHRONIC HEPATITIS B RECEIVING ANTIVIRAL THERAPY AT THE BACH MAI INSTITUTE OF TROPICAL MEDICINE”, VMJ, vol. 561, no. 1, Jun. 2026.