twenty-one patients , suffering from bronchial asthma , with a moderate and clearly reversible airway obstruction , completed a double-blind cross-over trial of two theophylline sustained-release preparations , theolair retard ( = theolair s.r . = nuelin s.r . ) and theolin retard ( = theo-dur ) .
C0004096
bronchial asthma
C0039771
theophylline