1. Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, Fujian 350108, P.R. China
2. Department of Pathology, Affiliated Zhongshan Hospital of Xiamen University, Xiamen, Fujian 361004, P.R. China
3. Center of Translational Hematology, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China
4. Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China