Porta, Camillo, and Mara De Amici. “How to Predict the Development of Hepatocellular Carcinoma in Cirrhotic Patients. Despite Recent Advances, the Search Continues”. Oncology Reviews 1, no. 4 (December 19, 2011): 187-188. Accessed April 5, 2020. https://oncologyreviews.org/index.php/or/article/view/oncol.2007.187.