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The study aims to explore the effect of tiotropium on airway remodeling by using Endobronchial Optical Coherence Tomography (EB-OCT). We enrolled patients with GOLD I stage COPD. All the patients will...
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Lead Sponsor
Guangzhou Institute of Respiratory Disease
Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University
Guangzhou, Guangdong
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