RT Journal Article SR Electronic T1 Sputum inflammatory cells in COPD patients classified according to GOLD 2011 guidelines JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 978 OP 980 DO 10.1183/13993003.00784-2015 VO 47 IS 3 A1 Maria Laura Bartoli A1 Francesco Costa A1 Laura Malagrinò A1 Dario Nieri A1 Sandra Antonelli A1 Giovanna Decusatis A1 Claudia De Simone A1 Sabrina Santerini A1 Silvana Cianchetti A1 Manuela Latorre A1 Barbara Vagaggini A1 Pierluigi Paggiaro YR 2016 UL http://erj.ersjournals.com/content/47/3/978.abstract AB