The study, published last week, purporting to show that children's IQ can be increased by dietary supplements, is an unhappy piece of work. The association could well be due to chance.
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Blinkhorn, S. A dose of vitamins and a pinch of salt. Nature 350, 13 (1991). https://doi.org/10.1038/350013a0
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DOI: https://doi.org/10.1038/350013a0
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