Zanchetta, N., Vigano, P., Ferrario, M., Priuli, G., Djigbenoude, O., & Nardi, G. (1990). B and Delta hepatitis virus infection in a population of West Africa . Revista Do Instituto De Medicina Tropical De São Paulo, 32(1), 36-40. https://www.revistas.usp.br/rimtsp/article/view/28705