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http://journals.cambridge.org/action/displayAbstract?aid=1382100
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Karen Eriksen,
Jóhanna Haraldsdóttir,
Robert Pederson
and Hanne Vig Flyger
(2003).
Effect of a fruit and vegetable subscription in Danish schools. Public Health Nutrition, 6
,
pp 57-63
doi:10.1079/PHN2002356