1. First Department of General Surgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian 363000, P.R. China
2. Department of Traditional Chinese Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, P.R. China
3. Department of Hepatobiliary Surgery, Longyan First Hospital, Longyan, Fujian 364000, P.R. China
4. Interventional Diagnosis and Treatment Section, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361001, P.R. China