Validity of a food frequency questionnaire to estimate mean nutrient intake of Italian school children
| Autor: | Bellù, Roberto, Riva, Enrica, Ortisi, Maria Teresa, De Notaris, Roberta, Santini, Isabella, Giovannini, Marcello |
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| Zdroj: | In Nutrition Research 1996 16(2):197-200 |
| Databáze: | ScienceDirect |
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