@article{7a80ef320fad4815aaf6fe0347cba309,
title = "High-throughput liquid chromatography-tandem mass spectrometry assay for plasma theophylline and its metabolites",
author = "Junghan Song and Park, \{Kyoung Un\} and Park, \{Hyung Doo\} and Yeomin Yoon and Kim, \{Jin Q.\}",
year = "2004",
month = nov,
doi = "10.1373/clinchem.2004.035337",
language = "English",
volume = "50",
pages = "2176--2179",
journal = "Clinical Chemistry",
issn = "0009-9147",
publisher = "Oxford University Press",
number = "11",
}