A Imagawa1,2, T Hanafusa3. 1. Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan. aimagawa@endmet.med.osaka-u.ac.jp. 2. , 2-2-B5 Yamadaoka, Suita, 565-0871, Japan. aimagawa@endmet.med.osaka-u.ac.jp. 3. First Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan.