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Data on serum 25-hydroxyvitamin D levels and their correlation with airway infection incidence, summarizing findings from observational and interventional studies.
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![Figure 9: Data on serum 25-hydroxyvitamin D levels and their correlation with airway infection incidence, summarizing findings from observational and interventional studies.]() > Source: Armin Zittermann et al. "Vitamin D and airway infections: a European perspective.." *European journal of medical research*, 2016. PMID: [27009076](https://pubmed.ncbi.nlm.nih.gov/27009076/)
<figure> <img src="" alt="Data on serum 25-hydroxyvitamin D levels and their correlation with airway infection incidence, summarizing findings from observational and interventional studies." /> <figcaption>Figure 9. Data on serum 25-hydroxyvitamin D levels and their correlation with airway infection incidence, summarizing findings from observational and interventional studies.<br> Source: Armin Zittermann et al. "Vitamin D and airway infections: a European perspective.." <em>European journal of medical research</em>, 2016. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/27009076/">27009076</a></figcaption> </figure>