Affiliation: | Youn I Choi, Dong Kyun Park, Hyun Yee Cho, Jun-Won Chung, Kyung Oh Kim, Kwang An Kwon, Yoon Jae Kim, Department of Gastroenterology, Gachon University, Gil Medical Center, Incheon 21565, South KoreaSeung Joon Choi, Department of Pathology, Gachon University Gil Medical Center, Incheon 21565, South Korea |