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Airway obstruction in never smokers: Results from the Third National Health and Nutrition Examination Survey Bartolome R. Celli, MD, R.J. Halbert, MD, MPH, Robert J. Nordyke, PhD, Brigitte Schau, MD The American Journal of Medicine Volume 118, Issue 12, Pages (December 2005) DOI: /j.amjmed Copyright © 2005 Elsevier Inc. Terms and Conditions
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Figure 1 Relationship between lung function and age in never smokers. FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity. The American Journal of Medicine , DOI: ( /j.amjmed ) Copyright © 2005 Elsevier Inc. Terms and Conditions
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