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  1. Workgroup Exercise - Issues and Challenges in Conducting Systematic Reviews to Support Development of Nutrient ... 
    https://www.ncbi.nlm.nih.gov/books/NBK44080
    ... of vitamin A (Appendix E). Analytic Framework for Vitamin A Reference Value Discussed in this section are two specific ... been exceeded. Evidence Map for Key Questions on Vitamin A Reference Values The aim of the evidence map presented ...
  2. Issues and Challenges in Conducting Systematic Reviews to Support Development of Nutrient Reference Values: Workshop ... 
    https://www.ncbi.nlm.nih.gov/books/NBK44081
    ... Activities Surrounding the Second Meeting Analytic Framework for Vitamin A Reference Value Evidence Map for Key Questions on Vitamin A Reference Values 5. Summary Conclusions Acronyms Glossary Workshop Participants ...
  3. Summary - Issues and Challenges in Conducting Systematic Reviews to Support Development of Nutrient Reference Values: ... 
    https://www.ncbi.nlm.nih.gov/books/NBK44083
    ... to the process of systematic review to derive reference values for vitamin A. This “straw man” model was introduced to the ... future efforts to review and potentially revise nutrient reference values. Conclusions The published literature on vitamin A is large and its extent is likely similar ...
  4. Vitamin A 
    https://medlineplus.gov/ency/article/002400.htm
    ... that is thought to ensure enough nutrition. Dietary reference intakes for vitamin A: Infants (AI) 0 to 6 months: 400 micrograms ...
  5. Hypervitaminosis A 
    https://medlineplus.gov/ency/article/000350.htm
    Institute of Medicine (US) Panel on Micronutrients. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, ...
  6. Vitamin A 
    https://medlineplus.gov/vitamina.html
    ... School of Public Health) Clinical Trials ClinicalTrials.gov: Vitamin A (National Institutes of Health) Journal Articles References and abstracts from MEDLINE/PubMed (National Library of ...
  7. xmlmplus_topics_2025-06-06.xml 
    https://medlineplus.gov/xml/mplus_topics_2025-06-06.xml
    ... institute><related-topic >Antioxidants</related-topic><related-topic >Vitamins</related-topic><see-reference >Retinol</see-reference><site ><information-category >Patient Handouts</information- ...
  8. Introduction - Issues and Challenges in Conducting Systematic Reviews to Support Development of Nutrient Reference ... 
    https://www.ncbi.nlm.nih.gov/books/NBK44086
    ... assessment proposed different upper levels of intake for vitamin A. 9 Given the importance of defining reliable nutrient reference values, there is a need for an explicit, ...
  9. Vitamins 
    https://medlineplus.gov/ency/article/002399.htm
    Recommendations for vitamin A, as well as other nutrients, are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board at the National Academies of Sciences, Engineering, and Medicine. ...
  10. Abetalipoproteinemia - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK532447
    ... and ALT 1-1.5 times the upper reference limit) Prolonged international normalized ratio (INR) Low serum concentrations of fat-soluble vitamins (A, D, E, and K) Establishing the Diagnosis The ...
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