1. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
2. Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
3. Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
4. Korea Environment Institute, Sejong, Republic of Korea
5. Department of Dental Hygiene, College of Health Science, Eulji University, Gyeonggi-do, Republic of Korea
6. Seoul Metropolitan Institute of Public Health and Environment, Seoul, Republic of Korea