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Validation of the Oxford WebQ Online 24-Hour Dietary Questionnaire Using Biomarkers

Greenwood, Darren C; Hardie, Laura J; Frost, Gary S; Alwan, Nisreen A; Bradbury, Kathryn E; et al.  American Journal of Epidemiology Vol. 188, Iss. 10,  (Oct 2019): 1858-1867.

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