Comparison of duplicate portion and 24 h recall as reference methods for validating a FFQ using urinary markers as the estimate of true intake
Publisher: Cambridge University Press
E-ISSN: 1475-2662|114|8|1304-1312
ISSN: 0007-1145
Source: British Journal of Nutrition, Vol.114, Iss.8, 2015-08, pp. : 1304-1312
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Abstract