Youwen Tan1, Hongbo Chen2, Xinbei Zhou3, Li Sun3. 1. Department of Hepatology, The Third Hospital of Zhenjiang Affiliated Jiangsu University, Zhenjiang, China. Electronic address: tyw915@sina.com. 2. Department of Infection, Jurong Hospital Affiliated to Jiangsu University, Zhenjiang, China. 3. Department of Hepatology, The Third Hospital of Zhenjiang Affiliated Jiangsu University, Zhenjiang, China.