1. China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Tongzhou Qu, China
2. Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, USA
3. Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Tongzhou Qu, China
4. Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Tongzhou Qu, China