Affiliation: | 1. College of Pharmaceutical Sciences, Ritsumeikan University, 1‐1‐1 Nojihigashi, Kusatsu, Shiga 525‐8577 (Japan), Fax: (+81)?77‐561‐5829;2. Graduate School of Pharmaceutical Sciences, Osaka University, 1–6 Yamada‐oka, Suita, Osaka 565‐0871 (Japan) |