Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medgongyf@126.com. Department of Ultrasound, the First People's Hospital of Yichang, China Three Gorges University, Yichang 443000, China. yczhangyb@126.com. Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medliaoyd@126.com. Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medtangyq@126.com. Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medmaic@126.com. Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medchentj@126.com. Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital& Institute of Guangzhou Medical University, Guangzhou 510095, China. medtangh@126.com.