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A Taiwanese food frequency questionnaire correlates with plasma docosahexaenoic acid but not with plasma eicosapentaenoic acid levels: questionnaires and plasma biomarkers

Kuo-Liong Chien*, Meei-Shyuan Lee, Yi-Tsen Tsai, Pey-Rong Chen, Hung-Ju Lin, Hsiu-Ching Hsu, Yuan-The Lee and Ming-Fong Chen

BMC Medical Research Methodology 2013, 13:23  doi:10.1186/1471-2288-13-23