Ramalho, F., Velosa, J., Costa, A., Baptista, A. and de Moura, M.C. 1993. The intrahepatic expression of the hepatitis B virus in chronic delta hepatitis. Acta Médica Portuguesa. 6, 5 (May 1993), 187–91. DOI:https://doi.org/10.20344/amp.3082.