Media type: E-Article Title: Drug screening in biological fluids the need for a systematic approach Contributor: de Zeeuw, Rokus A. imprint: Elsevier BV, 1997 Published in: Journal of Chromatography B: Biomedical Sciences and Applications Language: English DOI: 10.1016/s0378-4347(96)00332-5 ISSN: 0378-4347 Keywords: General Chemistry Origination: Footnote: