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Demographic characteristics of the study population (control subjects, n = 28; patients with pulmonary arterial hypertension [PAH], n = 62). (A) Distribution of sex in relation to age (displayed in decades) in control subjects and patients with PAH (solid, men; shaded, women). (B) Distribution of mean pulmonary arterial pressure (mPAP) in PAH (n = 62). (C) Distribution of pulmonary vascular resistance (PVR) in PAH (n = 60).
