1. Department of Dermatology; Kawasaki Municipal Hospital; Kawasaki Japan
2. Department of Dermatology; Keio University School of Medicine; Tokyo Japan
3. Department of Pathology; National Center for Child Health and Development; Tokyo Japan
4. Department of Pathology; Kawasaki Municipal Hospital; Kawasaki Japan
5. Department of Diagnostic Pathology; Medical Hospital of Tokyo Medical and Dental University; Tokyo Japan