1. Department of Infectious Diseases and Applied Immunology, Research Hospital of the Institute of Medical Science, The University of Tokyo, Tokyo, Japan
2. Section of Environmental Parasitology, Department of International Health Development, Division of Public Health, Tokyo Medical and Dental University, Tokyo, Japan
3. Department of Infectious Diseases and Pulmonary Medicine, National Defense Medical College, Saitama, Japan
4. Department of Immunology and Parasitology, University of Occupational and Environmental Health, Fukuoka, Japan
5. International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
6. Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan