AUTHOR=Almansour Salman , Alsalamah Abdullrahman , Almutlaq Mohammad , Sheikh Ahmed , Hamdan Hamdan Z. , Al-Nafeesah Abdullah , AlEed Ashwaq , Adam Ishag , Al-Wutayd Osama TITLE=Association of vitamin D deficiency and insufficiency with uncontrolled type 1 diabetes Mellitus among Saudi pediatric patients; a hospital-based retrospective study JOURNAL=Frontiers in Pediatrics VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2024.1479815 DOI=10.3389/fped.2024.1479815 ISSN=2296-2360