Prognostic Values of Alpha-Fetoprotein and Des-Gamma-Carboxyprothrombin in Hepatocellular Carcinoma in China: An Analysis of 4792 Patients oleh Pan YX, Sun XQ, Hu ZL, Xie W, Nie KX, Fang AP, Zhang YY, Fu YZ, Chen JB, Wang JC, Wang X, Zhang YJ, Hu DD, Chen MS