The State of Knowledge about Nutrition Sources of Vitamin D, Its Role in the Human Body, and Necessity of Supplementation among Parents in Central Poland.

Int J Environ Res Public Health · 2018 · PMC6068672 · PMID 30011906

Europe PMC DOI

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did not reach statistical significanceno p-value reported

The effect of education level on child supplementation did not reach statistical significance. 3.5.

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