1. Department of Dermatology Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
2. Department of Dermatology Sapporo City General Hospital SapporoJapan
3. Department of Dermatology Nara Medical University School of Medicine Nara Japan
4. Department of Developmental Biology of Hard Tissue Faculty of Dental Medicine Hokkaido University Sapporo Japan