1. Kansai Electric Power Hospital Osaka Japan
2. Kansai Electric Power Medical Research Institute Osaka Japan
3. Kawasaki Medical School Okayama Japan
4. Department of Prevention of Diabetes and Lifestyle‐Related Diseases, Graduate School of Medicine University of Tokyo Tokyo Japan
5. Toranomon Hospital Tokyo Japan
6. Japan Development, MSD K.K. Tokyo Japan
7. Merck Research Laboratories, Merck & Co., Inc. Kenilworth New Jersey USA