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. 2015 Jul 6;10(7):e0131126. doi: 10.1371/journal.pone.0131126

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© 2015 Pratumvinit et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 1 — The maternal plasma level of 25-hydroxyvitamin D [25(OH)D]showed a weakly negative correlation with the maternal plasma level of intact parathyroid hormone (iPTH), n = 147. Linear regression equation: iPTH = –0.0193[25(OH)D] + 4.3884. (Pearson’s r = –0.29, P<0.01)