1. Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250000, P.R. China
2. Department of Orthopedics, Shandong Second Provincial General Hospital, Shandong Provincial ENT Hospital, Jinan, Shandong 250000, P.R. China
3. Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
4. Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China