PT - JOURNAL ARTICLE AU - F Magdy TI - When is it too EARLY to start bosentan in pulmonary arterial hypertension? DP - 2008 Oct 01 TA - Thorax PG - 865--865 VI - 63 IP - 10 4099 - http://thorax.bmj.com/content/63/10/865.short 4100 - http://thorax.bmj.com/content/63/10/865.full SO - Thorax2008 Oct 01; 63