1. Division of Kidney and Hypertension; Department of Internal Medicine; The Jikei University School of Medicine; Tokyo; Japan
2. Department of Neurosurgery; The Jikei University School of Medicine; Tokyo; Japan
3. Department of Urology; The Jikei University School of Medicine; Tokyo; Japan
4. Department of Radiology; The Jikei University School of Medicine; Tokyo; Japan
5. Division of Neuropathology; Department of Neuroscience; Research Center for Medical Science; The Jikei University School of Medicine; Tokyo; Japan