1. Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Fukuoka, Japan
2. Department of Respiratory Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Fukuoka, Japan
3. Shared-Use Research Center, University of Occupational and Environmental Health, Japan, Kitakyushu, Fukuoka, Japan
4. Morphology Core Unit, Kyushu University Hospital, Fukuoka, Japan
5. Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Fukuoka, Japan