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Investigation of Chronic Obstructive Pulmonary Disease (COPD) Phenotypes and Endotypes in China
This is a non-drug interventional cohort study, which aims to investigate the clinical, radiological and biological factors associated with disease progression in COPD in China. Participants will be recruited from multiple hospitals across Guangdong province categorized as Type A hospitals (those at prefecture-level and above) and Type B hospitals (those below prefecture-level).
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