Prevalence of medical therapy for pulmonary arterial hypertension (PAH) in chronic thromboembolic pulmonary hypertension (CTEPH) prior to referral for pulmonary thromboendarterectomy (PTE) [abstract] - Jensen,K.W.; Kerr,K.M.; Fedullo,P.F. (Am J Respir Crit Care Med, 2008)