1. Department of Anatomic Pathology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
2. Department of Orthopedic Surgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
3. Stroke Center; Steel Memorial Yawata Hospital; Fukuoka Japan
4. Department of Neurosurgery; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
5. Department of Neuropathology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan