1. Department of Epidemiology and Biostatistics, and
2. Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
3. Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
4. Environmental Health Center, and
5. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
6. Institute of Medical Research, Seoul National University Bundang Hospital, Seongnam, Republic of Korea