Park JH, Karmaus W, Zhang H
Pang KY, Lee MH
Ryu YJ, Chun EM, Lee JH, Chang JH
Shin DW, Stein MA
Won JS, Kim KH
Shin YM, Cho H, Lim KY, Cho SM
Kim JP, Hyun MY
Lee H, Jung HY, Yun E, Um HY, Jee YJ
Oh DH, Kim SA, Lee HY, Seo JY, Choi BY, Nam JH
Choi SK, Min SJ, Cho MS, Joung H, Park SM
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
Lee EW, Park JH
Lee H, Roh HS, Yoon JS, Lee SY
Lee MS, Kim JH, Park MS, Yang J, Ko YH, Ko SD, Joe SH
Choi Y, Choi E, Shin D, Park SM, Lee K