Validation of a food frequency questionnaire for assessing dietary nutrients in Brazilian children 5 to 10 years of age - Fumagalli, Fernanda; Monteiro, Jacqueline Pontes; Sartorelli, Daniela Saes; Vieira, Marta Neves Campanelli Marçal; Bianchi, Maria de Lourdes Pires (Nutrition, 2008)