Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: keyword exact "portion size estimation" cql: author exact 801000450503 or (type exact bookEditor and editor exact 801000450503) Add to list Journal Article A1 open access Food photographs in nutritional surveillance: errors in portion size estimation using drawings of bread and photographs of margarine and beverages consumption Willem De Keyzer (UGent) , Inge Huybrechts (UGent) , Mieke De Maeyer (UGent) , Marga Ocké, Nadia Slimani, Pieter van 't Veer and Stefaan De Henauw (UGent) (2011) BRITISH JOURNAL OF NUTRITION. 105(7). p.1073-1083