RT Journal Article SR Electronic T1 Fluticasone/salmeterol is associated with a higher risk of pneumonia and pneumonia related events in comparison with budesonide/formoterol in patients with COPD JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 996 OP 996 DO 10.1136/thoraxjnl-2013-204098 VO 68 IS 11 A1 Avais Jabbar YR 2013 UL http://thorax.bmj.com/content/68/11/996.abstract AB