1. Milott Cosmetic Corporation 2976‐12 Sugeta, Kanagawa Yokohama 221‐0864 Japan
2. Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
3. Division of Drugs National Institute of Health Sciences Setagaya Tokyo 158‐8501 Japan