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