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Ariansen I, Mortensen LH, Graff-Iversen S, Stigum H, Kjøllesdal MK, Næss Ø.Ariansen I, et al.BMC Public Health. 2017 Mar 30;17(1):281. doi: 10.1186/s12889-017-4123-0.BMC Public Health. 2017.PMID: 28356092Free PMC article.