1. Department of Public Health and Health Policy, Graduate School of Biomedical and Health Sciences, Hiroshima University
2. Department of Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
3. Department of Public Health, University of Occupational and Environmental Health, Japan
4. Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan
5. Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences University of Occupational and Environmental Health, Japan