@misc{indiciaeba9c51668b28, title = {Extractionless method for the simultaneous high-performance liquid chromatographic determination of urinary caffeine metabolites for N-acetyltransferase 2, cytochrome P450 1A2 and xanthine oxidase activity assessment.}, author = {A Nyéki and J Biollaz and U W Kesselring and L A Décosterd}, year = {2001}, doi = {10.1016/s0378-4347(00)00616-2}, url = {https://pubmed.ncbi.nlm.nih.gov/11393735/}, note = {Source identifier: 11393735} }