RT Journal Article SR Electronic T1 Airway epithelial gene expression to detect lung cancer in smokers JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 774 OP 774 VO 63 IS 9 A1 A B Nanguzgambo YR 2008 UL http://thorax.bmj.com/content/63/9/774.abstract AB