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Kaplan-Meier analysis showing survival in patients with systemic sclerosis–related pulmonary arterial hypertension (SSc-PAH) and idiopathic pulmonary arterial hypertension (IPAH) treated with prostanoids (6) or advanced therapy (4). ERA = endothelin receptor antagonists; mPAP = mean pulmonary arterial pressure; NYHA = New York Heart Association; PDE5 = phosphodiesterase 5; PVR = pulmonary vascular resistance.
