1 Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China.
2 Department of Hepatobiliary Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Zhejiang, 310014, Hangzhou, China.
3 Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Zhejiang, 310014, Hangzhou, China.
4 Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China. liuqingguang@vip.sina.com.
5 Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China. tks0912@foxmail.com.