title: Methylation of theophylline to caffeine in premature infants.
mesh_terms: D001049:Apnea / Q000188:drug therapy*; D001711:Biotransformation; D002110:Caffeine / Q000378:metabolism*; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000188:drug therapy*; D008745:Methylation; D013806:Theophylline / Q000378:metabolism* / Q000627:therapeutic use / Q000633:toxicity; D014970:Xanthines / Q000378:metabolism
chemical_list: D014970:Xanthines; D002110:Caffeine; D013806:Theophylline