Focaccia, R. .; Veronesi, R. .; Takeda, A. .; Bazone, J. R. C. .; Rodrigues, E. .; Mazza, C. C. .; Kimura, R. T. .; Feldman, C. . Prevalence of Hepatitis B Surface Antigen Antibody in Two Hospitals for Psychiatric Patients. Rev. Inst. Med. Trop. São Paulo 1982, 24 (6), 385-387.