 - Medically diagnosed wheezing, bronchodilator use, or steroid use systemic or inhaled, by parentlegal representative report or chart review, within the 42 days prior to randomization i.e., children with recent persistent asthma are excluded; or history of severe persistent asthma, according to the criteria described in the National Asthma Education and Prevention Program NAEPP Expert Panel Report: Guidelines for the Diagnosis and Management of Asthma - Update on Selected Topics 2002 