Cheong, Hae-Kwan; Kim, Eun A.; Choi, Jung-Keun; Choi, Sung-Bong; Suh, Jeong-Ill; Choi, Dae Seob; Kim, Jung Ran
ArticleIssue Date2007CitationENVIRONMENTAL HEALTH PERSPECTIVES, v.115, no.1, pp 107 - 112PublisherUS DEPT HEALTH HUMAN SCIENCES PUBLIC HEALTH SCIENCE