Natural course of early COPD.
Rhee CK, Kim K, Yoon HK, Kim JA, Kim SH, Lee SH, Park YB, Jung KS, Yoo KH, Hwang YI.
Rhee CK, et al.
Int J Chron Obstruct Pulmon Dis. 2017 Feb 20;12:663-668. doi: 10.2147/COPD.S122989. eCollection 2017.
Int J Chron Obstruct Pulmon Dis. 2017.
PMID: 28255237
Free PMC article.