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Ringshausen FC, Schlösser S, Nienhaus A, Schablon A, Schultze-Werninghaus G, Rohde G.Ringshausen FC, et al.J Occup Med Toxicol. 2009 Jun 8;4:11. doi: 10.1186/1745-6673-4-11.J Occup Med Toxicol. 2009.PMID: 19505310Free PMC article.