1. Department of Internal Medicine; Hakuhokai Central Hospital; Hyogo Japan
2. Department of Internal Medicine; Kawanishi City Hospital; Hyogo Japan
3. Department of Laboratory Medicine; Jinnouchi Clinic Diabetes Center; Kumamoto Japan
4. Department of Internal Medicine; Jinnouchi Clinic Diabetes Center; Kumamoto Japan
5. Department of Internal Medicine; Kouhoukai Takagi Hospital; Fukuoka Japan
6. Preventive Medical Center; Kouhoukai Takagi Hospital; Fukuoka Japan
7. Department of Biomedical Laboratory Sciences, Faculty of Health Sciences; Kumamoto University; Kumamoto Japan