Show 15 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="BIRIM, O" or (type any "bookEditor issueEditor" and editor="BIRIM, O") Add to list Journal Article A1 Validation of the Charlson comorbidity index in patients with operated primary non-small cell lung cancer O BIRIM, APWM MAAT, AP KAPPETEIN, Jan Van Meerbeeck (UGent) , RAM DAMHUIS and AMC BOGERS (2003) EUROPEAN JOURNAL OF CARDIO-THORACIC SURGERY. 23(1). p.30-34