1. Department of Pharmaceutics, School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-ku, Okayama 703-8516, Japan
2. Faculty of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kodo, Kyotanabe-shi, Kyoto 610-0395, Japan
3. Department of Biopharmaceutics, Kyoto Pharmaceutical University, 5 Misasagi-nakauchi-cho, Yamashina, Kyoto 607-8414, Japan
4. Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
5. Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada, Kobe 658-8558, Japan