title: Invited commentary: comparison of the Block and the Willett food frequency questionnaires.
authors.affiliation: University of California, Berkeley, School of Public Health, USA.
authors.forename: G
authors.initials: G
authors.lastname: Block
mesh_terms: D004034:Diet Surveys; D005502:Food / Q000706:statistics & numerical data*; D006801:Humans; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires