Mode of administration of sustained-release tablets.
D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002675:Child, Preschool; D003692:Delayed-Action Preparations; D006801:Humans; D010349:Patient Compliance; D013806:Theophylline / Q000008:administration & dosage*
D003692:Delayed-Action Preparations; D013806:Theophylline