Case-control study on risk factors to COPD – does the sampling of the cases and controls affect the results?

I. C. Sørheim, A. Johannessen, T. B. Grydeland, A. Gulsvik, P. S. Bakke (Bergen, Norway)

Source: Annual Congress 2008 - Epidemiology of respiratory symptoms and COPD
Session: Epidemiology of respiratory symptoms and COPD
Session type: Thematic Poster Session
Number: 2048
Disease area: Airway diseases

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I. C. Sørheim, A. Johannessen, T. B. Grydeland, A. Gulsvik, P. S. Bakke (Bergen, Norway). Case-control study on risk factors to COPD – does the sampling of the cases and controls affect the results?. Eur Respir J 2008; 32: Suppl. 52, 2048

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