Validity and reproducibility of a semi-quantitative food frequency questionnaire for use among Portuguese pregnant women

Pinto, E; Severo, M; Correia, S; Silva, ID; Lopes, C; Barros, H; (2010) Validity and reproducibility of a semi-quantitative food frequency questionnaire for use among Portuguese pregnant women. Maternal & child nutrition, 6 (2). pp. 105-119. ISSN 1740-8695 DOI: https://doi.org/10.1111/j.1740-8709.2009.00199.x

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