Vitamin D levels and status amongst asthmatic and non-asthmatic adolescents in Cyprus: a comparative cross-sectional study.

BMC Public Health · 2015 · PMC4318540 · PMID 25638166

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a negative trendno p-value reported

Within AA, there was a negative trend between vitamin D levels and the number of reported asthma severity indicators.

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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.