RT Journal Article SR Electronic T1 From the authors JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1068 OP 1068 DO 10.1183/09031936.00018307 VO 29 IS 5 A1 A. Tremblay YR 2007 UL http://erj.ersjournals.com/content/29/5/1068.abstract AB