eighteen adult asthmatics took part in a double-blind crossover study comparing the effect on exercise-induced asthma ( eia ) of pretreatment with aerosolized 1 ) disodium cromoglycate ( dscg ) , 2 ) ipratropium bromide ( iptb ) , 3 ) fenoterol , 4 ) dscg + iptb and 5 ) saline .
C0004099
exercise-induced asthma
C0012694
dscg