1. 1Department of NeurosurgeryGraduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
2. 2Department of EndocrinologyDiabetes and Metabolism, School of Medicine, Kitasato University, Sagamihara, Japan
3. 3Department of DiabetesMetabolism and Endocrinology
4. 4Department of Epidemiology and Preventive MedicineGraduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
5. 5Department of NeurosurgeryGraduate School of Biomedical Science, Hiroshima University, Hiroshima, Japan