1. Department of Chemistry, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan
2. Nihon Bioresearch Inc., Hashima 501-6251, Japan
3. Research Institute for Microbial Diseases, Osaka University, Suita 565-0871, Japan
4. Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan
5. Department of Pediatrics, Asahikawa Medical University, Asahikawa 078-8510, Japan