Figure 1

![Figure 1: PRISMA flow diagram for the systematic review of vitamin D's role in sleep disorders of children and adolescents, showing study identification, screening, and inclusion steps.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8835880/bin/ijms-23-01430-g001.jpg)

> Source: Federica Prono et al. "The Role of Vitamin D in Sleep Disorders of Children and Adolescents: A Systemat." *International journal of molecular sciences*, 2022. PMID: [35163353](https://pubmed.ncbi.nlm.nih.gov/35163353/)

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  <img src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8835880/bin/ijms-23-01430-g001.jpg" alt="PRISMA flow diagram for the systematic review of vitamin D's role in sleep disorders of children and adolescents, showing study identification, screening, and inclusion steps." />
  <figcaption>Figure 1. PRISMA flow diagram for the systematic review of vitamin D's role in sleep disorders of children and adolescents, showing study identification, screening, and inclusion steps.<br>  Source: Federica Prono et al. "The Role of Vitamin D in Sleep Disorders of Children and Adolescents: A Systemat." <em>International journal of molecular sciences</em>, 2022. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/35163353/">35163353</a></figcaption>
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