1. Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
2. Department of Endocrinology and Metabolism, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
3. Department of Endocrinology, Yokohama City Minato Red Cross Hospital, Kanagawa, Japan
4. Department of Endocrinology and Metabolism, Soka Municipal Hospital, Saitama, Japan
5. Department of Diabetes and Endocrinology, Tokyo Metropolitan Hiroo Hospital, Tokyo, Japan
6. Department of Diagnostic Radiology and Nuclear Medicine, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
7. Department of Hepatobiliary and Pancreatic Surgery, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan