1. Department of Infectious Diseases, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
2. Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
3. Okinawa Institute of Advanced Sciences, Okinawa, Japan
4. SENTAN Pharma, Inc., Fukuoka, Japan
5. Tribhuvan University, Institute of Medicine, Department of Microbiology, Maharajgunj, Kathmandu, Nepal