1. From the Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Kitakyushu
2. Center for Surveillance, Immunization, and Epidemiologic Research
3. Center for Emergency Preparedness and Response
4. Department of Fungal Infection, National Institute of Infectious Diseases, Tokyo
5. Research Division, UMA Corporation, Chiba
6. Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan.