%0 Journal Article %T Treat-to-target approach in pulmonary arterial hypertension: a consensus-based proposal %A Olivier Sitbon %A Adolfo Baloira Villar %A Fabrice Bauer %A Bj£¿rn Ekmehag %J European Respiratory Review %D 2012 %I European Respiratory Society %U http://err.ersjournals.com/content/21/125/259.full.pdf+html