1. Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
2. Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
3. Department of Medical Oncology, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
4. Department of Human Anatomy, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China