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. 2018 May 14;16(1):231–235. doi: 10.3892/etm.2018.6165

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Copyright: © Fukushi et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 2. — Serial changes in the level of urinary 8-OHdG for 127 subjects who continually participated for 3 years. The mean values of urinary 8-OHdG in 2014 and 2015 were significantly higher than that in 2013. **P<0.01. 8-OHdG, 8-hydroxy-2′-deoxyguanosine.