Hong SK, Lee JS, Kim EC
Lin SH, Kuo PH, Kuo SH, Yang PC
Lee YS, Park S, Oh YM, Lee SD, Park SW, Kim YS, In KH, Jung BH, Lee KH, Ra SW, Hwang YI, Park YB, Jung KS, Korean COPD Study Group
Hwang YI, Kim EJ, Lee CY, Park S, Choi JH, Park YB, Jang SH, Kim CH, Shin TR, Park SM, Kim DG, Lee MG, Hyun IG, Jung KS
Shin TR, Oh YM, Park JH, Lee KS, Oh S, Kang DR, Sheen S, Seo JB, Yoo KH, Lee JH, Kim TH, Lim SY, Yoon HI, Rhee CK, Choe KH, Lee JS, Lee SD
Yoo JW, Hong Y, Seo JB, Chae EJ, Ra SW, Lee JH, Kim EK, Baek S, Kim TH, Kim WJ, Lee JH, Lee SM, Lee S, Lim SY, Shin TR, Yoon HI, Sheen SS, Lee JS, Huh JW, Oh YM, Lee SD