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Bergström G, Lohela-Karlsson M, Kwak L, Bodin L, Jensen I, Torgén M, Nybergh L.Bergström G, et al. Among authors: bodin l.BMC Public Health. 2017 May 12;17(1):436. doi: 10.1186/s12889-017-4329-1.BMC Public Health. 2017.PMID: 28494753Free PMC article.Clinical Trial.