RT Journal Article SR Electronic T1 Inhaled corticosteroids in COPD: quantifying risks and benefits JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 499 OP 500 DO 10.1136/thoraxjnl-2012-202959 VO 68 IS 6 A1 Cates, Chris YR 2013 UL http://thorax.bmj.com/content/68/6/499.abstract AB