RT Journal Article SR Electronic T1 From the authors JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 458 OP 458 DO 10.1183/09031936.06.00054806 VO 28 IS 2 A1 A. Vazir A1 M. J. Morrell A1 A. K. Simonds YR 2006 UL http://erj.ersjournals.com/content/28/2/458.abstract AB