RT Journal Article SR Electronic T1 Authors' response JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 1096 OP 1097 DO 10.1136/thx.2011.159558 VO 66 IS 12 A1 Facco, Monica A1 Cabrelle, Anna A1 Agostini, Carlo YR 2011 UL http://thorax.bmj.com/content/66/12/1096.2.abstract AB