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. 2014 Mar 3;9(3):e90858. doi: 10.1371/journal.pone.0090858

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© 2014 Song et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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#P<0.05 compared to SED, 2W and 8W group in 14 weeks after operation. ★ P<0.05 compared to SED group in 10 weeks after operation. Δ P<0.05 compared to SED group in 14 weeks after operation.