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Raikos, Nikolaos; Schmid, Helene; Nussbaumer, Susanne; Ambach, Lars; Lanz, Stephan; Längin, Andreas; König, Stefan; Roth, Nadine; Auwärter, Volker; Weinmann, Wolfgang (2014). Determination of Δ9-tetrahydrocannabinolic acid A (Δ9-THCA-A) in whole blood and plasma by LC–MS/MS and application in authentic samples from drivers suspected of driving under the influence of cannabis. Forensic science international, 243, pp. 130-136. Elsevier Scientific Publ. Ireland 10.1016/j.forsciint.2014.07.026
König, Stefan; Aebi, Beat; Lanz, Stephan; Gasser, Martina; Weinmann, Wolfgang (2011). On-line SPE LC-MS/MS for the quantification of Δ9-tetrahydrocannabinol (THC) and its two major metabolites in human peripheral blood by liquid chromatography tandem mass spectrometry. Analytical and bioanalytical chemistry, 400(1), pp. 9-16. Heidelberg: Springer-Verlag 10.1007/s00216-011-4708-x
