The relative validity and reproducibility of food frequency questionnaires in the China Kadoorie Biobank Study
<strong>Background:</strong> Short versions of qualitative and quantitative food frequency questionnaires (FFQs) are widely used to assess usual food intake. However, fewer studies evaluated their relative validity and reproducibility in the Chinese population. <br> <strong>M...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
MDPI
2022
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