1. Department of Work Systems and Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Fukuoka, Japan
2. Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Fukuoka, Japan
3. Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan
4. Department of Occupational Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan
5. Department of Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Fukuoka, Japan
6. Department of Public Health, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan
7. Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Fukuoka, Japan