E. N. . Sarno, L. M. M. . Vieira, and D. M. . Faulhaber, “Surface antigen of B hepatitis virus (HBsAg) and primary liver carcinoma: a retrospective study”, Rev. Inst. Med. Trop. São Paulo, vol. 22, no. 1, pp. 20–23, Feb. 1980, Accessed: Jun. 26, 2024. [Online]. Available: https://revistas.usp.br/rimtsp/article/view/197274