%0 Journal Article %T High-throughput determination of theophylline and caffeine in human serum by conventional liquid chromatography-mass spectrometry %A Arinobu, Tetsuya %A Hattori, Hideki %A Kumazawa, Takeshi %A Lee, Xiao-Pen %A Mizutani, Yoko %A Katase, Takao %A Kojima, Sadao %A Omori, Takayuki %A Kaneko, Rina %A Ishii, Akira %A Seno, Hiroshi %J Forensic Toxicology %V 27 %N 1 %P 1-6 %@ 1860-8965 %D 2008-12-04 %I Springer Japan %~ DeepDyve