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. 2011 Feb;32(1):5–31.

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The contents of articles or advertisements in The Clinical Biochemist – Reviews are not to be construed as official statements, evaluations or endorsements by the AACB, its official bodies or its agents. Statements of opinion in AACB publications are those of the contributors. Print Post Approved - PP255003/01665. Copyright © 2005 The Australasian Association of Clinical Biochemists Inc. No literary matter in The Clinical Biochemist – Reviews is to be reproduced, stored in a retrieval system or transmitted in any form by electronic or mechanical means, photocopying or recording, without permission. Requests to do so should be addressed to the Editor. ISSN 0159 – 8090

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Figure 9. — Chromatograms of five differentially TAD-labelled patient samples containing 25OHD₂, 25OHD₃ and their respective internal standards (20 peaks overall). Reprinted from Netzel *et al*. (Clin Chem 2011;57:431–40) with permission from Clinical Chemistry.

Figure 9.