Comparative study of ultrasonographic findings with the operative findings of biliary surgery. Journal of Surgical Sciences, [S. l.], v. 22, n. 1, p. 25–29, 2020. DOI: 10.3329/jss.v22i1.44011. Disponível em: https://banglajol.info/index.php/JSS/article/view/44011. Acesso em: 29 jun. 2026.