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Jeong, Woon Kyung; Park, Ji Won; Choi, Hyo Seong; Chang, Hee Jin; Jeong, Seung-Yong
SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES; Vol.23 11; 2575-2579
Jeong, Woon Kyung; Park, Ji Won; Lim, Seok-Byung; Choi, Hyo Seong; Jeong, Seung-Yong
JOURNAL OF KOREAN MEDICAL SCIENCE; Vol.25 3; 429-434