1. Department of Neurological Surgery; Nihon University School of Medicine; Itabashi Tokyo Japan
2. Division of Human Pathology, Department of Pathology and Microbiology; Nihon University School of Medicine; Itabashi Tokyo Japan
3. Division of Morphological and Functional Pathology, Department of Pathology and Microbiology; Nihon University School of Medicine; Itabashi Tokyo Japan
4. Division of Oncologic Pathology, Department of Pathology and Microbiology; Nihon University School of Medicine; Itabashi Tokyo Japan