RT Journal Article SR Electronic T1 The Brussels Declaration JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 290 OP 290 DO 10.1183/09031936.00066409 VO 34 IS 1 A1 J. Gerritsen YR 2009 UL http://erj.ersjournals.com/content/34/1/290.abstract AB