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van den Berg JJ, Roberts MB, Bock BC, Martin RA, Stein LA, Parker DR, McGovern AR, Shuford SH, Clarke JG.van den Berg JJ, et al. Among authors: parker dr.Int J Environ Res Public Health. 2016 Jan 12;13(1):114. doi: 10.3390/ijerph13010114.Int J Environ Res Public Health. 2016.PMID: 26771622Free PMC article.Clinical Trial.