title: Primary pulmonary hypertension in adults; clinical features, catheterization findings and long-term follow up.
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization / Q000009:adverse effects; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis* / Q000401:mortality; D008297:Male; D008875:Middle Aged