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Röttger A, Kessler P.Röttger A, et al. Among authors: kessler p.J Environ Radioact. 2019 Sep;205-206:48-54. doi: 10.1016/j.jenvrad.2019.04.012. Epub 2019 May 15.J Environ Radioact. 2019.PMID: 31102905Free article.