1. National Academy of Sciences: Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. 2002, Washington, DC: National Academy Press
2. National Academy of Sciences: Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. 2000, Washington, DC: National Academy Press
3. National Academy of Sciences: Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium and Carotenoids. 2000, Washington, DC: National Academy Press
4. National Academy of Sciences: Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. 1999, Washington, DC: National Academy Press
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