[1] Peking University,Key Laboratory of Carcinogenesis and Translational Research, Hepatopancreatobiliary Surgery Department I, School of Oncology, Beijing Cancer Hospital and Institute
[2] Ministry of Education,Key Laboratory of Carcinogenesis and Translational Research, Department of Ultrasonography, School of Oncology, Beijing Cancer Hospital and Institute
[3] Peking University,undefined
[4] Ministry of Education,undefined