1. Institute of Digestive Disease, China Three Gorges University, Yichang, Hubei, P.R. China
2. Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China
3. Department of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China