1. Center for Neural Regeneration, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.
2. Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.
3. Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
4. School of Medicine, Taipei Medical University, Taipei, Taiwan.
5. Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.