College of Medicine, Hunan Normal University, Changsha 410013, China;
College of Medicine, Hunan Normal University, Changsha 410013, China;
Department of pathology, Hunan Provincial Tumor Hospital, Changsha 410013, China;
Department of pathology, Hunan Provincial Tumor Hospital, Changsha 410013, China;
College of Medicine, Hunan Normal University, Changsha 410013, China;
College of Medicine, Hunan Normal University, Changsha 410013, China;
College of Medicine, Hunan Normal University, Changsha 410013, China;