1. Department of Radiology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
2. Department of Orthopedics, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
3. Department of Orthopedics, Central Hospital, Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
4. Department of Pathology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China