Validity and reproducibility of a semi-quantitative food-frequency questionnaire for estimating calcium intake in Belgian preschool children

Publisher: Cambridge University Press

E-ISSN: 1475-2662|95|4|802-816

ISSN: 0007-1145

Source: British Journal of Nutrition, Vol.95, Iss.4, 2006-04, pp. : 802-816

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Abstract