RT Journal Article SR Electronic T1 Increased hyaluronic acid content in idiopathic pulmonary arterial hypertension JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00159507 A1 E. Papakonstantinou A1 F.M. Kouri A1 G. Karakiulakis A1 I. Klangas A1 O. Eickelberg YR 2008 UL http://erj.ersjournals.com/content/early/2008/09/03/09031936.00159507.abstract AB