1. State Key Laboratory of Biochemical Engineering; Key Laboratory of Biopharmaceutical Preparation and Delivery, Chinese Academy of Sciences, Beijing 100190, China
2. Department of Neurosurgery, Yuquan Hospital, School of Clinical Medicine, Tsinghua University, Beijing 100084, China
3. State Key Laboratory of New Ceramics and Fine Processing; Key Laboratory of Advanced Materials (Ministry of Education of China), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
4. Department of Neurosurgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
5. Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
6. State Key Laboratory of Organic−Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China