Elastography and contrast-enhanced ultrasonography in the early detection of hepatocellular carcinoma in an experimental model of nonalcoholic steatohepatitis - Carvalho, Cibele Figueira; Chammas, Maria Cristina; Oliveira, Cláudia Pinto Marques Souza de; Cogliati, Bruno; Carrilho, Flair José; Cerri, Giovanni Guido (Journal of Clinical and Experimental Hepatology, 2013)