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Hollands, Gareth J and Shemilt, Ian and Marteau, Theresa and Jebb, Susan A and Lewis, Hannah and Wei, Yinghui and Higgins, Julian PT and Ogilvie, David (2015) Portion, package or tableware size for changing selection and consumption of food, alcohol and tobacco. Cochrane Database of Systematic Reviews, (9), DOI: 10.1002/14651858.CD011045.pub2.