1. Department of Occupational and Environmental Medicine Hanyang University College of Medicine Seoul Republic of Korea
2. Department of Occupational and Environmental Health Hanyang University Graduate School of Public Health Seoul Republic of Korea
3. Korea Institute of Labor Safety and Health Seoul Republic of Korea
4. Social and Behavioral Sciences Harvard T.H. Chan School of Public Health Boston Massachusetts
5. Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency Ulsan Republic of Korea