Episodic use of an inhaled corticosteroid or leukotriene receptor antagonist in preschool children with moderate-to-severe intermittent wheezing.

• 在患有中度到重度间断性哮喘的学龄前儿童中不定期应用一种吸入性肾上腺皮质类固醇或白细胞三烯受体拮抗剂。