[Prophylaxis of bronchial asthma--disodium cromoglycate and ketotifen].
D001249:Asthma / Q000188:drug therapy / Q000517:prevention & control*; D004205:Cromolyn Sodium / Q000627:therapeutic use*; D006801:Humans; D007665:Ketotifen / Q000627:therapeutic use*
D004205:Cromolyn Sodium; D007665:Ketotifen