Seo HY, Lee DW, Nam S, Cho Sj, Yoon JY, Hong YC, Lee N
Yang DH, John S, Mitsuhiro F, Cha JM, Byeon JS, Kim HW, Kim HG, Friedland S, Koh YX, Yoon JY, Kwak MS, Ye BD, Kim J, Yang SK
Yoon JY, Park CG, Kim EJ, Choi BM, Yoon JU, Kim YH, Lee MO, Han KS, Ahn JH
Yoon JY, Moon JK, Kim CH, Lee S, Yoon PW
Ki HJ, Yoon JY, Cha JM
Oh JH, Yoon JY
Yoon JY, Park CW, Park YS, Yoo JJ, Kim HJ
Yoon JY, Kim JW
Yoon JY, Park JH, Lee KJ, Kim HS, Rhee SM, Oh JH
Lee TH, Yoon JY, Paik CN, Choi HS, Jang JY, The Quality Management Committee of The Korean Society of Gastrointestinal Endoscopy
Yoon JY, Cheon CK
Kim DE, Sagong H, Yoon JY
Shin SY, Chae MK, Kwak MS, Yoon JY, Jeon JW, Cha JM
Kim JB, Yoon JY
Kim B, Muk YI, Yoon JY, Joo N
Yoon JY, Yang DH, Cho HJ, Kim NK, Kim CY, Son J, Roh JH, Jang SY, Bae MH, Lee JH, Park HS, Cho Y, Chae SC
Yoon JY, Cho JW, Kim JW
Yoon JY, Kim DW, Ahn JH, Choi EJ, Kim YH, Jeun M, Kim EJ
Lee BJ, Chon J, Yoon JY, Jung D
Yoon JY, Kim TS, Ahn JH, Yoon JU, Kim HJ, Kim EJ