1 Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, China.
2 Central Laboratory of Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha 410005, China.
3 Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, China; Central Laboratory of Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha 410005, China; Hunan Engineering Research Center of Digital Hepatobiliary Medicine, Changsha 410005, China; Hunan Key Laboratory for the Prevention and Treatment of Biliary Tract Diseases, Changsha 410005, China. Electronic address: liusulai@hunnu.edu.cn.