• openAccess   Reproducibility and validity of a food frequency questionnaire designed to assess diet in children aged 4-5 years 

      Vioque, Jesus; Giménez Monzó, Daniel; Navarrete-Muñoz, Eva María; Garcia de la Hera, Manuela; González-Palacios, Sandra; Rebagliato, Marisa; Ballester, Ferran; Murcia, Mario; Iñiguez, Carmen; Granado, Fernando; INMA-Valencia Cohort Study Public Library of Science (2016)
      Background The food frequency questionnaire (FFQ) is the most efficient and cost-effective method to investigate the relationship between usual diet and disease in epidemiologic studies. Although FFQs have been validated ...