| http://www.w3.org/ns/prov#value | - The food items, portion sizes, and nutrient database were constructed using the US Department of Agriculture's 1994-1996 Continuing Survey of Food Intakes by Individuals.10,11 The FFQ also asked about frequency and types of multivitamins and frequency and dosage of individual calcium supplements, including calcium-containing antacids (eg, Tums).
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