1. Department of Medicine, Nippon Medical School.
2. Nakaya Clinic.
3. Internal Medicine, Teikyo University School of Medicine.
4. Biochemistry, Cell Biology and Metabolism, Nagoya City University Graduate School of Medical Science.
5. Department of Biostatistics/Epidemiology and Preventive Health Sciences, The University of Tokyo.
6. Internal Medicine, Tokyo Medical University Hachioji Medical Center.
7. Life-Style Related Disease Center, Mitsuke City Hospital.
8. Kureha General Hospital.
9. Mitsukoshi Health and Welfare Foundation.