1. Departments of Neurosurgery (T.H.), Tokyo 113-8655, Japan
2. Department of Neurosurgery (T.H., A.M.), Teikyo University Chiba Medical Center, Ichihara 299-011, Japan
3. Department of Neurosurgery (K.As.), Hirosaki University Graduate School of Medicine, Hirosaki 036-8203, Japan
4. Department of Neurosurgery (Y.O.), Konan Hospital, Sendai 982-0012, Japan
5. Department of Neurosurgery (S.T.), Tsukuba University, Tsukuba 305-0006, Japan
6. Department of Neurosurgery (S.T., Y.Is., A.T.), Nippon Medical School, Tokyo 113-0031, Japan
7. Internal Medicine II (O.I., N.H.), Tokyo Women's Medical University, Tokyo 162-8666, Japan
8. Department of Neurosurgery (Y.Iw.), Osaka City General Hospital, Osaka 534-0021, Japan
9. Department of Neurosurgery (K.S.), Kurume University School of Medicine, Kurume 830-0011, Japan
10. Department of Hypothalamic and Pituitary Surgery (N.F., H.N., S.Y.), Toranomon Hospital, Tokyo 105-0001, Japan
11. Department of Neurosurgery (S.F., K.Ar.), Kagoshima University, Kagoshima 890-0075, Japan
12. Nephrology and Endocrinology (K.T.), the University of Tokyo, Tokyo 113-8655, Japan
13. Department of Neurosurgery (A.T.), Hiroshima University, Hiroshima 734-0037, Japan
14. Department of Neurosurgery (H.I.), Southern Tohoku General Hospital, Koriyama 963-8052, Japan
15. Department of Pathology (R.Y.O.), International University of Health and Welfare Mita Hospital, Tokyo 108-8329, Japan
16. Departments of Neurosurgery (K.Am., T.K.), Tokyo 162-8666, Japan
17. Department of Neurosurgery (T.K.), Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo 276-0046, Japan
18. Clinical Research Institute (A.S.), National Hospital Organization Kyoto Medical Center, Kyoto 612-0861, Japan