AUTHOR=Burgard Leonie , Spiegler Clarissa , Jansen Sara , Brettschneider Anna-Kristin , Straßburg Andrea , Alexy Ute , Storcksdieck genannt Bonsmann Stefan , Ensenauer Regina , Heuer Thorsten TITLE=Critical vitamin D and iron intakes in infants aged 6–11 months: results from the nationwide German KiESEL study JOURNAL=Frontiers in Nutrition VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2025.1472685 DOI=10.3389/fnut.2025.1472685 ISSN=2296-861X