1. Center for Diabetes and endocrinology, Kyoto, Japan
2. Hyogo Prefectural Amagasaki Hospital, Amagasaki, Japan.
3. Ikeda Hospital, Amagasaki, Japan.
4. Department of Neurosurgery, Kyoto, Japan
5. Department of Pathology, The Tazuke Kofukai Foundation Medical Institute Kitano Hospital, Osaka, Japan.
6. National Hospital Organization Kyoto Medical Center, Kyoto, Japan.
7. Kyoto University Graduate School of Medicine, Kyoto, Japan.