Validation of the Oxford WebQ online 24-hour dietary questionnaire using biomarkers

DC Greenwood, LJ Hardie, GS Frost, NA Alwan, KE Bradbury, Michelle Carter, Paul Elliott, CEL Evans, HE Ford, N Hancock, TJ Key, Bette Liu, MA Morris, UZ Mulla, K Petropoulou, GDM Potter, E Riboli, Heather Young, PA Wark, JE Cade