1. Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
2. Department of Trauma Orthopedics, Tianjin Hospital, Tianjin 300211, P.R. China
3. Key Laboratory of Immuno Microenvironment and Disease of the Educational Ministry of China, Department of Immunology, Tianjin Medical University, Tianjin 300070, P.R. China
4. Laboratory of Medical Molecular Virology, School of Medicine, Nankai University, Tianjin 300071, P.R. China