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Adult
Chronic Obstructive
2
Humans
Iceland
Lung
Lungnasjúkdómar
2
Prevalence
2
Primary Health Care
2
Pulmonary Disease
2
Questionnaires
2
Reykingar
2
Severity of Illness Index
2
Smoking
2
Smoking Cessation
2
Spirometry
2
Time Factors
2
Akureyri
1
Heilsugæsla
1
Heilsugæslustöðvar
1
Heislugæsla
1
Öndunarfærasjúkdómar
1
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