RT Journal Article SR Electronic T1 Confidence from experience: dual endothelin receptor antagonism in PAH JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 1 OP 2 DO 10.1183/09059180.00010201 VO 16 IS 102 A1 S. P. Gaine A1 J. Behr YR 2007 UL http://err.ersjournals.com/content/16/102/1.abstract AB