Estimating prevalence of chronic obstructive pulmonary disease in the Southern Cone of Latin America: How different spirometric criteria may affect disease burden and health policies

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Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death worldwide. The study aimed to determine and compare the prevalence of COPD in the general population aged 45-74 years old according to fixed ratio and lower limit of normal (LLN) thresholds in four cities in the Southern Cone of Latin America.

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