1. Department of Orthopedics Huashan Hospital, Fudan University Shanghai China
2. Department of Radiology Huashan Hospital, Fudan University Shanghai China
3. Department of Neurology Huashan Hospital, Fudan University Shanghai China
4. Department of Physical Medicine and Rehabilitation Upstate Medical University, State University of New York at Syracuse Syracuse New York USA
5. Department of Orthopedics The Fifth People's Hospital, Fudan University Shanghai China