1. Department of Dermatology, Saitama Medical University, 1397-1 Yamane, Hidaka city, Saitama 350-1298, Japan
2. Department of Pathology, Saitama Medical University, 1397-1 Yamane, Hidaka city, Saitama 350-1298, Japan
3. Department of Pathology, Saitama International Medical Center, Saitama Medical University, 1397-1 Yamane, Hidaka city, Saitama 350-1298, Japan