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Clinical Toxicology Volume 54, 2016 - Issue 4
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Quantitative analysis of powdered caffeine products purchased from the Internet using liquid chromatography–quadrupole time-of-flight mass spectrometry

Gillian A. BeauchampDepartment of Emergency Medicine, Oregon Health & Science University, Portland, OR, USA; Correspondence[email protected]
,
Thomas LinDepartment of Laboratory Medicine, University of California, San Francisco, CA, USA
,
William Z. D. ZengDepartment of Laboratory Medicine, University of California, San Francisco, CA, USA
,
Robert G. HendricksonDepartment of Emergency Medicine, Oregon Health & Science University, Portland, OR, USA;
&
Roy GeronaDepartment of Laboratory Medicine, University of California, San Francisco, CA, USA
Pages 339-343 | Received 17 Oct 2015, Accepted 31 Dec 2015, Published online: 03 Feb 2016

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