Martelli, C. M. T.; Andrade, A. L. S. S. de; Cardoso, D. das D. P.; Silva, S. A. e; Zicker, F. Methological Issues in the Interpretation of Serologic Screening for Hepatitis B Virus Among Blood donor’s . Rev. saúde pública 1991, 25 (1), 11-16. https://doi.org/10.1590/S0034-89101991000100003.