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Validity and reproducibility of a food frequency questionnaire for assessment of fruit and vegetable intake in Iranian adults(*)
BACKGROUND: This study's aim was to design and validate a semi-quantitative food frequency questionnaire (FFQ) for assessment of fruits and vegetables (FV) consumption in adults of Isfahan by comparing the FFQ with dietary reference method and blood plasma levels of beta-carotene, vitamin C, an...
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| Auteurs principaux: | , , , , , |
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| Format: | Artigo |
| Langue: | Inglês |
| Publié: |
Medknow Publications & Media Pvt Ltd
2011
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| Sujets: | |
| Accès en ligne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3430018/ https://ncbi.nlm.nih.gov/pubmed/22973322 |
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