1. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
2. Institute of Environmental Health, Seoul National University Medical Research Center, Seoul, Republic of Korea
3. Department of Epidemiology and Biostatistics, Seoul National University School of Public Health, Seoul, Republic of Korea
4. Department of Occupational and Environmental Medicine, Inha University Hospital, Incheon, Republic of Korea
5. Division of Environmental Epidemiology, National Institute of Environmental Research, Incheon, Republic of Korea