RT Journal Article SR Electronic T1 From the authors JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 187 OP 187 DO 10.1183/09031936.00037007 VO 30 IS 1 A1 I. Horvath YR 2007 UL http://erj.ersjournals.com/content/30/1/187.abstract AB