1. Department of Environmental Health, Graduate School of Public Health; Seoul National University; Seoul Korea
2. Department of Public Health and Environment; Kosin University; Busan Korea
3. Department of Preventive Medicine, Graduate School of Public Health; Seoul National University; Seoul Korea
4. Department of Social and Preventive Medicine; Sungkyunkwan University School of Medicine; Suwon, Gyeonggi-do Korea
5. Environmental Health Center for Atopic Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine; Seoul Korea
6. Department of Pediatrics, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea