AUTHOR= TITLE=Retraction: Associations of vitamin D receptor polymorphisms with risk of Alzheimer's disease, Parkinson's disease, and mild cognitive impairment: a systematic review and meta-analysis JOURNAL=Frontiers in Aging Neuroscience VOLUME=17 YEAR=2025 URL=https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2025.1557340 DOI=10.3389/fnagi.2025.1557340 ISSN=1663-4365