1. Department of Microbiology, Graduate School of Medical Sciences Kumamoto University Kumamoto Japan
2. Department of Respiratory Medicine, Graduate School of Medical Sciences Kumamoto University Kumamoto Japan
3. Graduate School of Science and Technology Kumamoto University Kumamoto Japan
4. Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences Kumamoto University Kumamoto Japan
5. Graduate School of Science and Technology, Environmental Safety Center Kumamoto University Kumamoto Japan