1. Faculty of Pharmaceutical Sciences Tokushima Bunri University Yamashiro-cho Tokushima 7708514 Japan
2. Ōmura Satoshi Memorial Institute and Graduate School of Infection, Control Sciences Kitasato University, 5-9-1 Shirokane Minato-ku Tokyo 1088641 Japan
3. Department of Pharmaceutical Sciences Faculty of Pharmacy Keio University, 1-5-30 Shibakoen Minato-ku Tokyo 1058512 Japan