the reproducibility of exercise-induced asthma ( eia ) was studied in children with perennial asthma , using treadmill exercise challenge tests repeated at mean intervals of 1 week ( group i , n = 20 ) , 1 month ( group ii , n = 20 ) and 1 year ( group iii , n = 18 ) .
C0004099
exercise-induced asthma
C0004096
asthma