1. Department of Neurosurgery Kobe University Graduate School of Medicine Kobe Japan
2. Department of Neurosurgery Nishi‐Kobe Medical Center Kobe Japan
3. Division of Neurology Kobe University Graduate School of Medicine Kobe Japan
4. Division of Pathology for Regional Communication Kobe University School of Medicine Kobe Japan
5. Department of Diagnostic Pathology Hyogo Cancer Center Akashi Japan
6. Department of Diagnostic Pathology Kobe University Hospital Kobe Japan