RT Journal Article SR Electronic T1 From the authors JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 437 OP 438 DO 10.1183/09031936.06.00127405 VO 27 IS 2 A1 Kostadima, E. A1 Kaditis, A. A1 Alexopoulos, E. A1 Zakynthinos, E. A1 Sfyras, D. YR 2006 UL http://erj.ersjournals.com/content/27/2/437.abstract AB