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This comment refers to the article available at doi:10.1007/s00404-014-3550-8 and an author’s reply to this comment is available at doi:10.1007/s00404-015-3716-z.
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Beyazit, F., Beyazit, Y. The effect of seasonal variations on vitamin D levels in pregnant women. Arch Gynecol Obstet 292, 1–2 (2015). https://doi.org/10.1007/s00404-015-3714-1
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DOI: https://doi.org/10.1007/s00404-015-3714-1