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Smoking
Smoking Cessation
Questionnaires
Forced Expiratory Volume
Vital Capacity
Asthma
Pulmonary Disease, Chronic Obstructive
Obstructive Lung Diseases
alpha 1-Antitrypsin Deficiency
Spirometry
Respiratory Function Tests
Risk Factors
Prevalence
Age Factors
Sex Factors
Oregon
United States
Lung
Bronchodilator Agents
Health Maintenance Organizations
Co-Publications
64
15
12
8
6
5
4
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