Letter: Vasodilators in heart failure.
D006333:Heart Failure / Q000188:drug therapy*; D006801:Humans; D007548:Isosorbide Dinitrate / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D014665:Vasodilator Agents / Q000627:therapeutic use*
D014665:Vasodilator Agents; D007548:Isosorbide Dinitrate