1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Chiba University Hospital, Chiba City, Japan
2. Department of Clinical Cell Biology, Chiba University Graduate School of Medicine, Chiba City, Japan
3. Department of Metabolic Diseases, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
4. Department of Rheumatology, Tokyo Metropolitan Otsuka Hospital, Tokyo, Japan
5. Institute of Bioengineering, Toin Yokohama University, Yokohama, Japan