Cotrim Helma, Mota Eduardo, Leite Livia, Silva Luciana, & Lyra Luiz. (1992). A case-control study on the association of hepatitis B virus infection and hepatocellular carcinoma in Northeast Brazil. Universidade de São Paulo.
Chicago Style (17th ed.) CitationCotrim Helma, Mota Eduardo, Leite Livia, Silva Luciana, and Lyra Luiz. A Case-control Study on the Association of Hepatitis B Virus Infection and Hepatocellular Carcinoma in Northeast Brazil. Universidade de São Paulo, 1992.
MLA (9th ed.) CitationCotrim Helma, et al. A Case-control Study on the Association of Hepatitis B Virus Infection and Hepatocellular Carcinoma in Northeast Brazil. Universidade de São Paulo, 1992.
Warning: These citations may not always be 100% accurate.