Therapeutic effectiveness of cromolyn sodium with 38 severely asthmatic children under five years of age.
D000367:Age Factors; D001249:Asthma / Q000188:drug therapy*; D002675:Child, Preschool; D004205:Cromolyn Sodium / Q000627:therapeutic use*; D006801:Humans; D008722:Methods; D013806:Theophylline / Q000627:therapeutic use*
D013806:Theophylline; D004205:Cromolyn Sodium