1. Department of Dermatology; Gunma University Graduate School of Medicine; Maebashi Japan
2. Department of Hematology; Gunma University Graduate School of Medicine; Maebashi Japan
3. Department of Internal medicine; Shibukawa Central Hospital; Shibukawa Japan
4. Department of Dermatology; Hirosaki University Graduate School of Medicine; Hirosaki Japan
5. Department of Pathobiochemistry; Graduate School of Medicine; Osaka City University; Osaka Japan