Risk of over-diagnosis of COPD in asymptomatic elderly never-smokers

¹Institute of Internal Medicine, Deaconess Hospital, University of Bergen and ⁴Dept of Thoracic Medicine, Haukeland Hospital, Bergen, Norway, ²Division of Pulmonary and Critical Care Medicine, Oregon Health Science University and ³Kaiser Permanente Center for Health Research, Portland, OR, USA

J.A. Hardie, Institute of Internal Medicine, Deaconess Hospital, University of Bergen, Ulriksdal 8, N5009, Bergen, Norway. Fax: 47 55979435. E-mail: jon.hardie@med.uib.no

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