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Research Article

Food photographs: practical guidelines I. Design and analysis of studies to validate portion size estimates

Michael Nelsona1 c1 and Jóhanna Haraldsdóttira2

a1 Department of Nutrition and Dietetics, King's College London, Campden Hill Road, London W8 7AH, UK

a2 Research Department of Human Nutrition, Royal Veterinary and Agricultural University, Rolighedsvei 30, DK-1958 Frederiksberg C, Copenhagen, Denmark

(Received April 21 1998)

(Accepted August 08 1998)


c1 *Corresponding author: E-mail: