title: Primary pulmonary hypertension.
mesh_terms: D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy* / Q000209:etiology / Q000473:pathology; D008297:Male; D011651:Pulmonary Artery / Q000473:pathology; D011655:Pulmonary Embolism / Q000150:complications