Self-administered food frequency questionnaire used in the 5-year follow-up survey of the JPHC Study: questionnaire structure, computation algorithms, and area-based mean intake.
J Epidemiol. 2003 Jan;13(1 Suppl):S13-22. doi: 10.2188/jea.13.1sup_13.
J Epidemiol. 2003.
PMID: 12701629