Abstract
The database of the Hungarian randomised controlled trial of periconceptional multivitamin supplementation for the prevention of neural-tube defects was used to evaluate the length of the pre- and postovulatory phases of the menstrual cycle before and during multivitamin supplementation. The female cycle was more regular (i.e., the variance was lower) during the multivitamin supplementation.
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Dudás, I., Rockenbauer, M. & Czeizel, A.E. The effect of preconceptional multivitamin supplementation on the menstrual cycle. Arch Gynecol Obstet 256, 115–123 (1995). https://doi.org/10.1007/BF01314639
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DOI: https://doi.org/10.1007/BF01314639