Epidemiological assessment of diet: a comparison of a 7-day diary with a food frequency questionnaire using urinary markers of nitrogen, potassium and sodium

N Day, N McKeown, M Wong, AA Welch, SA Bingham

Research output: Contribution to journalArticlepeer-review

319 Citations (Scopus)
Original languageEnglish
Pages (from-to)309-317
Number of pages9
JournalInternational Journal of Epidemiology
Issue number2
Publication statusPublished - Apr 2001

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