1. Neurology Division; Department of Internal Medicine; Sakura Medical Center; Toho University; Sakura Japan
2. Department of Neurosurgery; Sakura Medical Center; Toho University; Sakura Japan
3. Department of Neurology; Chiba University; Chiba Japan
4. Continence Center; Dokkyo Medical College; Tochigi Japan
5. Department of Urology; Sakura Medical Center; Toho University; Sakura Japan