RT Journal Article SR Electronic T1 Cigarette smoking and response to inhaled corticosteroids in COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1701393 DO 10.1183/13993003.01393-2017 VO 51 IS 1 A1 Surya P. Bhatt A1 Julie A. Anderson A1 Robert D. Brook A1 Peter M.A. Calverley A1 Bartolome R. Celli A1 Nicholas J. Cowans A1 Courtney Crim A1 Fernando J. Martinez A1 David E. Newby A1 Jørgen Vestbo A1 Julie C. Yates A1 Mark T. Dransfield YR 2018 UL http://erj.ersjournals.com/content/51/1/1701393.abstract AB