title: Inter- and intra-subject variability in theophylline pharmacokinetics.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003692:Delayed-Action Preparations; D006801:Humans; D007223:Infant; D007408:Intestinal Absorption; D007700:Kinetics; D013806:Theophylline / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism*
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline