RT Journal Article SR Electronic T1 When is it too EARLY to start bosentan in pulmonary arterial hypertension? JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 865 OP 865 VO 63 IS 10 A1 F Magdy YR 2008 UL http://thorax.bmj.com/content/63/10/865.abstract AB