Vitamin D levels in maternal serum and umbilical cord blood in a multi-ethnic population in Antwerp, Belgium.

It should be kept in mind though that this does not mean that vitamin D supplementation would lower the incidence of the above-mentioned pregnancy complications; published trials on supplementation have been of low quality and have only demonstrated none to borderline significant changes in outcome (De-Regil et al., 2012; Thorne-Lyman et al., 2012).

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