1. Department of Food and Human Health Sciences; Graduate School of Human Life Science; Osaka City University; Osaka, Japan
2. Department of Microbiology; School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; Tokyo, Japan
3. Research Institute; National Center for Global Health and Medicine; Tokyo, Japan
4. Department of Molecular Bacteriology; Research Institute for Microbial Diseases; Osaka University; Osaka, Japan
5. Division of Microbiology; National Institute of Health Sciences; Tokyo, Japan
6. The OCU Advanced Research Institute for Natural Science and Technology; Osaka City University; Osaka, Japan
7. Department of International Health; Institute of Tropical Medicine; Nagasaki University; Nagasaki, Japan