title: Caffeine and theophylline: serum/CSF correlation in premature infants.
mesh_terms: D001049:Apnea / Q000188:drug therapy; D001812:Blood-Brain Barrier; D002110:Caffeine / Q000378:metabolism* / Q000627:therapeutic use; D002853:Chromatography, Liquid; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000188:drug therapy; D013806:Theophylline / Q000378:metabolism* / Q000627:therapeutic use; D014970:Xanthines / Q000097:blood / Q000134:cerebrospinal fluid
chemical_list: D014970:Xanthines; C008514:methylxanthine; D002110:Caffeine; D013806:Theophylline