1. Department of Dermatology; Keio University School of Medicine; Tokyo Japan
2. Department of Preventive Medicine and Public Health; Keio University School of Medicine; Tokyo Japan
3. Department of Center for Clinical Research; Keio University School of Medicine; Tokyo Japan
4. Department of Dermatology; National Center for Child Health and Development; Tokyo Japan
5. Nara Medical University School of Medicine; Nara Japan
6. Okayama University Hospital; Okayama Japan
7. Kizawa Memorial Hospital; Gifu Japan
8. Kurume University School of Medicine; Fukuoka Japan
9. Philadelphia V.A. Medical Center; Philadelphia Pennsylvania USA
10. University of Pennsylvania; Philadelphia Pennsylvania USA