1. Department of Epidemiology and Public Health, Kanazawa Medical University, Uchinada, Japan
2. Department of Health Science, Shiga University of Medical Science, Otsu, Japan
3. Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada, Japan
4. School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
5. Department of Human Science and Fundamental Nursing, Toyama University School of Nursing, Toyama, Japan
6. Department of Occupational and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan