1. Department of Neurological Surgery Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
2. Department of Psychiatry and Behavioral Neurobiology University of Alabama at Birmingham Birmingham Alabama USA
3. Department of Neurosurgery Osaka Medical College Osaka Japan
4. Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair University of South Florida Tampa Florida USA