title: Food Frequency Questionnaires: simple and cheap, but are they valid?
authors.forename: Allan
authors.initials: A
authors.lastname: Hackett
mesh_terms: D004032:Diet / Q000706:statistics & numerical data*; D004034:Diet Surveys / Q000592:standards*; D006801:Humans; D011795:Surveys and Questionnaires / Q000592:standards*; D054928:Validation Studies as Topic