Nutrition Journal

official impact factor 2.56
Search for
Advanced search
Nutrition Journal
Tools
Open Access Email this article to a friend

Validity of a self-administered food frequency questionnaire (FFQ) and its generalizability to the estimation of dietary folate intake in Japan

Junko Ishihara, Seiichiro Yamamoto, Hiroyasu Iso, Manami Inoue, Shoichiro Tsugane* and the JPHC FFQ Validation Study Group

Nutrition Journal 2005, 4:26 doi:10.1186/1475-2891-4-26

Fields marked * are required


Multiple email addresses should be separated with commas or semicolons.