corticosteroids
CONCLUSION: In patients with persistent asthma, most of       whom were concurrently using inhaled corticosteroids, treatment with inhaled       salmeterol provided significantly greater improvement than oral zafirlukast in       overall asthma control over the 4-week treatment period.
CONCLUSION: In  @OBJECT$  with persistent asthma, most of       whom were concurrently  @PREDICAT$  inhaled  @SUBJECT$ , treatment with inhaled       salmeterol provided significantly greater improvement than oral zafirlukast in       overall asthma control over the 4-week treatment period.