Hydralazine in pulmonary hypertension.
D006801:Humans; D006830:Hydralazine / Q000008:administration & dosage / Q000627:therapeutic use*; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D008173:Lung Diseases, Obstructive / Q000188:drug therapy; D009543:Nifedipine / Q000627:therapeutic use
D006830:Hydralazine; D009543:Nifedipine