1. Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China.
2. BloodWorks Research Institute and the Division of Hematology, Department of Medicine, School of Medicine, University of Washington, Seattle, Washington.
3. Nanomedicine Laboratory, Chinese National Academy of Nanotechnology and Engineering, Tianjin, China.
4. Department of Medicine, Imperial College London, London, United Kingdom.