Seo, Yeon Seok; Kwon, Yong Dae; Park, Sanghoon; Keum, Bora; Park, Beom Jin; Kim, Yong Sik; Jeen, Yoon Tae; Chun, Hoon Jai; Kim, Chang Duck; Ryu, Ho Sang, et al.
ArticleIssue Date2008CitationGASTROINTESTINAL ENDOSCOPY, v.67, no.4, pp 759 - 762PublisherMOSBY-ELSEVIER