Chung, Ii-Kwun; Lee, Jun Haeng; Lee, Suck-Ho; Kim, Sun-Joo; Cho, Joo Young; Cho, Won Young; Hwangbo, Young; Keum, Bo Ra; Park, Jong Jae; Chun, Hoon-Jai, et al.
ArticleIssue Date2009CitationGASTROINTESTINAL ENDOSCOPY, v.69, no.7, pp.1228 - 1235PublisherMOSBY-ELSEVIER