1. Regional Center for Japan Environment and Children's Study (JECS); University of Occupational and Environmental Health; Kitakyushu Japan
2. Department of Pediatrics; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
3. Department of Environmental Health; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
4. Department of Obstetrics and Gynecology; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
5. Department of Environmental Epidemiology; Institute of Industrial Ecological Sciences; University of Occupational and Environmental Health; Kitakyushu Japan