RT Journal Article SR Electronic T1 Usefulness of transbronchial needle aspiration in evaluating patients with lung cancer JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 890 OP 891 DO 10.1136/thx.2005.048728 VO 60 IS 11 A1 S Gasparini A1 G A Silvestri YR 2005 UL http://thorax.bmj.com/content/60/11/890.abstract AB