1. Department of Dermatology Nagoya University Graduate School of Medicine Nagoya Japan
2. St John's Institute of Dermatology Guy's and St Thomas' NHS Foundation Trust London U.K.
3. Department of Dermatology Hokkaido University Graduate School of Medicine Sapporo Japan
4. Department of Dermatology Aichi Medical University Nagakute Japan
5. Department of Dermatology Fujita Health University School of Medicine Toyoake Japan
6. Department of Medical and Molecular Genetics King's College London Guy's Hospital London U.K.