placebo
We have evaluated the       effects of the leukotriene receptor antagonist zafirlukast versus placebo in       patients with allergic rhinitis during the grass pollen season, using the nasal       glucocorticoid beclomethasone dipropionate (BDP) as a positive treatment control.
We have evaluated the       effects of the leukotriene receptor antagonist zafirlukast versus  @SUBJECT$   @PREDICAT$         @OBJECT$  with allergic rhinitis during the grass pollen season, using the nasal       glucocorticoid beclomethasone dipropionate (BDP) as a positive treatment control.