title: [Primary pulmonary hypertension].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis / Q000209:etiology; D007223:Infant; D007231:Infant, Newborn; D008297:Male