1. First Department of Internal Medicine, Osaka Medical College, Japan
2. Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Japan
3. Department of Virology, Medical School, University of Tampere, Tampere, Finland
4. Department of Forensic Medicine and Molecular Pathology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
5. Diabetic Center, Ota-Nisinouchi Hospital, Japan
6. Department of Legal Medicine, Shiga University of Medical Science, Japan
7. Department of Pathology, Osaka Medical College, Japan
8. Diabetes Research Center, Takanoko Hospital, Japan
9. Department of Microbiology, Center for Laboratory Medicine, Tampere University Hospital, Tampere, Finland