1. Department of Neurology Kawasaki Medical School Kurashiki Japan
2. Faculty of Pharmaceutical Sciences University of Toyama Toyama Japan
3. Graduate School of Science and Engineering Tokyo Denki University Hatoyama Saitama Japan
4. Diabetic Neuropathy Project Department of Diseases and Infection Tokyo Metropolitan Institute of Medical Science Tokyo Japan
5. Department of Pathology Kawasaki Medical School Kurashiki Japan
6. Department of Medical Technology Faculty of Health Sciences Kyorin University Tokyo Japan