1. Department of Neurosurgery and Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2. Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
3. Department of Pharmacology, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, People's Republic of China.
4. Department of Engineering & Applied Science, Yale University, New Haven, Connecticut.