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. 2015 Dec 18;10(12):e0145164. doi: 10.1371/journal.pone.0145164

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© 2015 Chen 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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Fig 5 — Four studies investigated the correlation between ALDH1 expression and the N stage. High ALDH1 expression was also associated with a positive N stage (N1/2) (N1 + N2 vs. N0, OR = 1.80, 95%CI: 1.17–2.79, P = 0.008, fixed effects model).