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Chronic Obstructive
Female
2
Forced Expiratory Volume
2
Humans
Male
2
Prevalence
2
Pulmonary Disease
2
Spirometry
Vital Capacity
80 and over
1
Adult
1
Age Factors
1
Aged
1
Cost of Illness
1
Cross-Sectional Studies
1
Iceland
1
Middle Aged
1
Questionnaires
1
Risk Factors
1
Smoking
1
Sweden
1
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