1. Emergency Medical Center, Kagawa University Hospital, Kagawa, Japan
2. Department of Biosafety, National Institute of Infectious Disease, Tokyo, Japan
3. Department of Immunology, National Institute of Infectious Disease, Tokyo, Japan
4. Department of Medical Entomology, National Institute of Infectious Disease, Tokyo, Japan
5. The Chemo-Sero-Therapeutic Research Institute (KAKETSUKEN), Kumamoto, Japan
6. Okinawa Prefectural Institute of Health and Environment, Okinawa, Japan
7. Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
8. Department of Emergency Medicine, Fukuoka City Hospital, Fukuoka, Japan
9. The Japan Snake Institute, Gunma, Japan
10. Department of Emergency Medicine, Tokyo Bay Urayasu/Ichikawa Medical Center, Chiba, Japan
11. Department of Emergency and Critical Care Medicine, Tokai University School of Medicine, Kanagawa, Japan