Labrea hepatitis hepatitis B and delta antigen expression in liver tissue: report of three autopsy cases - Fonseca, José Carlos Ferraz da; Gayotto, Luiz Carlos da Costa; Ferreira, Luiz Carlos Lima; Araújo, José Ribamar; Alecrim, Wilson Duarte; Santos, Raimunda Telma Macedo; Simonetti, José Pascoal; Alves, Venâncio Avancini Ferreira (Revista do Instituto de Medicina Tropical de São Paulo, 1985)