Study Design and Outcomes of Korean Obstructive Lung Disease (KOLD) Cohort Study
Tai Sun Park, Jae Seung Lee, Joon Beom Seo, Yoonki Hong, Jung-Wan Yoo, Byung Ju Kang, Sei Won Lee, Yeon-Mok Oh, Sang-Do Lee,
Tuberc Respir Dis. 2014;76(4):169-174.   Published online 2014 Apr 25     DOI: https://doi.org/10.4046/trd.2014.76.4.169
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