1. Division of Gene Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan.
2. Department of Dermatology, School of Medicine, Keio University, Shinjuku, Tokyo 160-8532, Japan.
3. Department of Dermatology and Cutaneous Biology, Jefferson Medical College, and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA 19107.