RT Journal Article SR Electronic T1 From the authors JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 184 OP 185 DO 10.1183/09031936.00051507 VO 30 IS 1 A1 R. M. van Leeuwen A1 A. W. J. Bossink A1 S. F. T. Thijsen YR 2007 UL http://erj.ersjournals.com/content/30/1/184.abstract AB