[18]La Force C F，Corren J，Wheeler W J，et al.Efficacy of azelas -tine nasal spray in seasona lallergicrh in it is patients who remainsymptomatic after treat ment with fexofenad ine[J].Ann A ll ergy Ast hm a Imm uno，2004，93(3)：154-159.

    [19]Hampel F C Jr， Ratner P H，Amar N J，et al.Improved quality of life among seasonal allergicrhin it is patients treated with olopatadine HC lnasalspray 0.4% and olopatadine H C lnasalspray 0.6% compared with vehicle placebo[J].Allergy Asthma Proc ......