title: Vasodilators in primary pulmonary hypertension: an old dilemma revisited.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D008297:Male; D009543:Nifedipine / Q000627:therapeutic use*
chemical_list: D009543:Nifedipine