Global research on vitamin D and coronavirus disease 2019: A bibliometric and visualized study.

Medicine (Baltimore) · 2022 · PMC9258968 · PMID 35801745

Europe PMC DOI

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an increasing trendno p-value reported

Conclusion: It was concluded that an increasing trend in the number of publications on vitamin D and COVID-19 has been observed.

also in 63,971 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.