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Sabino, E. C.; Guerra, E. M.; Oba, I. T.; Spina, A. M. M.; Vaz, A. J. Frequency of Hepatitis B Serological Markers in First Consultation Pregnant Women at Health Centers in a Metropolitan Area, S. Paulo City, Brazil . Rev. Inst. Med. Trop. São Paulo 1992, 34 (6), 535-541.