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The Dietary Reference Intake (DRI) is a system of nutrition recommendations from the Institute of Medicine (IOM) of the National Academies (United States)
four tables listed [at Dietary Reference Intakes Tables and Application: Health and Medicine Division]. "Dietary Reference Intakes Tables and Application :
Panel on Dietary Antioxidants and Related Compounds (2017). "Introduction to Dietary Reference Intakes. What are dietary reference intakes?". Dietary Reference
201904090. Retrieved 15 June 2019. "Dietary Reference Intakes (DRIs): Recommended Dietary Allowances and Adequate Intakes" (PDF). Food and Nutrition Board
PMID 19453674. Tolerable Upper Intake Levels For Vitamins And Minerals (PDF), European Food Safety Authority, 2006 Dietary Reference Intakes for Japanese (2010)