1. Department of Neurosurgery, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
2. National Center for Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
3. Laboratory of Infectious Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
4. Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
5. Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
6. Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.