1. Graduate School, International University of Health and Welfare
2. Neuroscience Center, Fukuoka Sanno Hospital
3. Stroke and Brain Center, Aizawa Hospital
4. Department of Neurosurgery, Fukuoka University
5. Department of OB/GYN, University of Florida
6. College of Medicine, University of Florida
7. Department of Neurosurgery, Instituto de Ciencias Neurologicas
8. Department of Neurological Surgery, Mayo Clinic