@article{rocha_diniz_borges_salomão_2012,  title={Assessment of portal venous index as a non-invasive method for diagnosing liver fibrosis in patients with chronic hepatitis C},  volume={49},  ISSN={0004-2803},  url={https://doi.org/10.1590/S0004-28032012000100004},  DOI={10.1590/S0004-28032012000100004},  number={1},  journal={Arquivos de Gastroenterologia},  publisher={Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE. },  author={Rocha, Haroldo Luis Oliva Gomes and Diniz, Angélica Lemos Debs and Borges, Valéria Ferreira de Almeida e and Salomão, Frederico Chaves},  year={2012},  month={Jan},  pages={14–18} }