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Manuel J.Manuel J.Environ Health Perspect. 1999 Apr;107(4):A196-201. doi: 10.1289/ehp.99107a196.Environ Health Perspect. 1999.PMID: 10090715Free PMC article.
Manuel J.Manuel J.Environ Health Perspect. 1999 Jul;107(7):A352-7. doi: 10.1289/ehp.99107a352.Environ Health Perspect. 1999.PMID: 10379013Free PMC article.