1. Department of Neuroendocrinology (H.N., K.M., S.H.), Basic Medical Sciences, University of Tsukuba, Tsukuba 305-8575, Japan
2. Department of Anatomy (Y.H., S.A., K.K.), School of Medicine, Keio University, Tokyo 160-8582, Japan
3. Laboratory of Functional Anatomy (M.M., E.N., T.H.), Faculty of Agriculture, Meiji University, Kanagawa 214-0071; Japan
4. Second Department of Internal Medicine (N.H.), National Defense Medical College, Saitama 359-8513, Japan
5. Shonan Kamakura General Hospital (S.K.), Kamakura 247-8533, Japan
6. Department of Neurosurgery (M.K.), School of Medicine, Keio University, Tokyo 160-8582, Japan