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Matthiessen J, Biltoft-Jensen A, Fagt S, Knudsen VK, Tetens I, Groth MV.Matthiessen J, et al. Among authors: knudsen vk.Public Health Nutr. 2014 Jul;17(7):1439-46. doi: 10.1017/S1368980013001444. Epub 2013 Jun 5.Public Health Nutr. 2014.PMID: 23735172Free PMC article.