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Food frequency questionnaire (2) |
24-h food recall (1) |
Bland–Altman test (1) |
FFQ (1) |
Qatar (1) |
Reproducibility (1) |
Validity (1) |
Vitamin D (1) |
Food frequency questionnaire (2) |
24-h food recall (1) |
Bland–Altman test (1) |
FFQ (1) |
Qatar (1) |
Reproducibility (1) |
Validity (1) |
Vitamin D (1) |