Bronchoscopic lung volume reduction by endobronchial valve in advanced emphysema:the first Asian report.

Efficacy and Safety of Roflumilast in Korean Patients with COPD.

Korean Obstructive Lung Disease study group. Functional and Prognostic Implications of the Main Pulmonary Artery Diameter to Aorta Diameter Ratio from Chest Computed Tomography in Korean COPD Patients.

Vitamin D Deficiency Is Associated with Rapid Decline in Exercise Capacity in Male Patients with Chronic Obstructive Pulmonary Disease.

Relationship between vitamin D-binding protein polymorphisms and blood vitamin D level in Korean patients with COPD.

Implications of Emphysema and Lung Function for the Development of Pneumonia in Patients with Chronic Obstructive Pulmonary Disease.

Development of a spirometry T-score in the general population.

IgG Sensitization to Extracellular Vesicles in Indoor Dust Is Closely Associated With the Prevalence of Non-Eosinophilic Asthma, COPD, and Lung Cancer.

Graphic analysis of flow-volume curves: a pilot study. BMC Pulm Med.

Outcome of Inhaler Withdrawal in Patients Receiving Triple Therapy for COPD. Tuberc Respir Dis (Seoul).