1. Department of Neurosurgery, University of Rochester, Rochester, New York.
2. Center for Neural Development and Disease, University of Rochester, Rochester, New York.
3. Department of Neurosurgery, Beijing Tiantan Puhua Hospital, Beijing, People's Republic of China.
4. Department of Neurosurgery, Chinese PLA General Hospital, Beijing, People's Republic of China.
5. Department of Neurosurgery, New York University, New York, New York.
6. Center for Brain Injury and Repair, University of Pennsylvania, Philadelphia, Pennsylvania.