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APA Citation
Armer, J. M., & Allcock, R. L. (n.d.). urine ethyl glucuronide and ethyl sulphate using liquid chromatography-tandem mass spectrometry in a routine clinical laboratory. Annals of clinical biochemistry, 54, 60–68. http://access.bl.uk/ark:/81055/vdc_100066746195.0x00000c