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Paulsen JE, Steffensen IL, Andreassen A, Vikse R, Alexander J.Paulsen JE, et al. Among authors: steffensen il.Carcinogenesis. 1999 Jul;20(7):1277-82. doi: 10.1093/carcin/20.7.1277.Carcinogenesis. 1999.PMID: 10383901
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