The asthmatic child: introduction.
D000628:Aminophylline / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002908:Chronic Disease; D004205:Cromolyn Sodium / Q000627:therapeutic use; D006801:Humans
D000628:Aminophylline; D004205:Cromolyn Sodium