Disappearange of hepatitis b surface antigen in chronic type B hepatitis after clinical and laboratorial relapse produced by abrupt withdrawal of immunossuppressive drugs - Silva, Luiz Caetano da; Mattar, Emilio; Carrilho, Flair José; Takeda, Augusta; Júnior, Hoel Sette; Gayotto, Luiz Carlos da Costa (Revista do Instituto de Medicina Tropical de São Paulo, 1983)