1. Department of Preventive Medicine Tokai University School of Medicine Isehara Japan
2. Research Support Center Shizuoka General Hospital Shizuoka Japan
3. Center for Public Health Informatics National Institute of Public Health Wako Japan
4. Department of Hygiene School of Medicine Kitasato University Sagamihara Japan
5. Chugoku Rosai Hospital Research Center for the Promotion of Health and Employment Support Japan Organization of Occupational Health and Safety Hiroshima Japan