title: Methylxanthines in serum, saliva, and spinal fluid of premature infants.
mesh_terms: D001049:Apnea / Q000188:drug therapy* / Q000378:metabolism; D002110:Caffeine / Q000134:cerebrospinal fluid / Q000378:metabolism* / Q000627:therapeutic use; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000188:drug therapy* / Q000378:metabolism; D007234:Infant, Premature; D007700:Kinetics; D012463:Saliva / Q000378:metabolism*; D013806:Theophylline / Q000134:cerebrospinal fluid / Q000378:metabolism* / Q000627:therapeutic use
chemical_list: D002110:Caffeine; D013806:Theophylline