title: [Echocardiographic assessment of pulmonary hypertension in the patients with Down syndrome who have no congenital heart disease].
mesh_terms: D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000150:complications*; D004452:Echocardiography; D005260:Female; D006330:Heart Defects, Congenital; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis* / Q000209:etiology; D007223:Infant; D008297:Male