Microcolumn liquid chromatography coupled with solid phase micro extraction (SPME/micro-LC) for the analysis of benzodiazepines in human urine K. Jinno, M. Taniguchi, H. Sawada and M. HayashidaAnalusis, 26 5 (1998) 27-30DOI: https://doi.org/10.1051/analusis:199826050027