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. 2013 Jun 7;12:77. doi: 10.1186/1475-2891-12-77

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Copyright © 2013 Karras et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Mean concentration of (A) maternal and (B) neonatal vitamin D forms. 1: 25(OH)D₂, 2: 25(OH)D₃, 3: 3-epi-25(OH)D₂, 4: 3-epi-25(OH)D₃, 5: 1α,25(OH)₂D₃. Bars represent within-group standard deviations. Mean values for each analyte are presented in Additional file 1.