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Schopflocher D, VanSpronsen E, Nykiforuk CI.Schopflocher D, et al.Int J Environ Res Public Health. 2014 Jan 23;11(2):1233-49. doi: 10.3390/ijerph110201233.Int J Environ Res Public Health. 2014.PMID: 24464234Free PMC article.