RETRACTION: Effect of Application of Different Exercise Intensities on Vitamin D and Parathormone in Children with Down's Syndrome (Retraction of Vol 2021, art no 7424857, 2021)

This article has been retracted by Hindawi, as publisher, followingan investigation undertaken by the publisher [1]. This investigationhas uncovered evidence of systematic manipulation ofthe publication and peer-review process. We cannot, therefore,vouch for the reliability or integrity of this article.Please note that this notice is intended solely to alertreaders that the peer-review process of this article has beencompromised.Wiley and Hindawi regret that the usual quality checks didnot identify these issues before publication and have since putadditional measures in place to safeguard research integrity.We wish to credit our Research Integrity and ResearchPublishing teams and anonymous and named external researchersand research integrity experts for contributing to thisinvestigation.The corresponding author, as the representative of allauthors, has been given the opportunity to register their agreementor disagreement to this retraction.We have kept a record ofany response received. © 2023 Hindawi Limited. All rights reserved.