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Pálsdóttir AM, Persson D, Persson B, Grahn P.Pálsdóttir AM, et al. Among authors: persson d, persson b.Int J Environ Res Public Health. 2014 Jul 14;11(7):7094-115. doi: 10.3390/ijerph110707094.Int J Environ Res Public Health. 2014.PMID: 25026080Free PMC article.