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Pulmonary CareHealth EconomicsRespiratory DiseasesChronic BronchitisHealth Care CostPulmonary MedicineMedicinePulmonary Disease
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Spirometric reference values from a Mediterranean population.
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BTS Guidelines for the Management of Chronic Obstructive Pulmonary Disease
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Asthma, Pulmonary Care, Thorax 2008 +12