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Reproducibility and validity of a food frequency questionnaire among pregnant women in a Mediterranean area
BACKGROUND: Studies exploring the role of diet during pregnancy are still scarce, in part due to the complexity of measuring diet and to the lack of valid instruments. The aim of this study was to examine the reproducibility and validity (against biochemical biomarkers) of a semi-quantitative food f...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584829/ https://www.ncbi.nlm.nih.gov/pubmed/23421854 http://dx.doi.org/10.1186/1475-2891-12-26 |