Cromolyn sodium for childhood asthma: a drug whose time has come.
D001249:Asthma / Q000188:drug therapy*; D002648:Child; D004205:Cromolyn Sodium / Q000627:therapeutic use*; D006801:Humans; D013806:Theophylline / Q000009:adverse effects / Q000627:therapeutic use
D013806:Theophylline; D004205:Cromolyn Sodium