Labrea hepatitis - hepatitis b and delta antigen expression in liver tissue: report of three autopsy cases - Fonseca, J C F; Gayotto, Luiz Carlos da Costa; Ferreira, L C L; Araujo, J R; Alecrim, W D; Santos, R T M; Simonetti, J P; Alves, Venâncio Avancini Ferreira (Revista do Instituto de Medicina Tropical de São Paulo, 1985)