No abstract available
MeSH terms
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General Practice
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Germany
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Humans
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Mass Screening / methods*
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Mass Screening / standards
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Pulmonary Disease, Chronic Obstructive / etiology
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Quality Assurance, Health Care / standards
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Smoking / adverse effects*
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Smoking Cessation
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Spirometry / methods*
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Spirometry / standards