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. 2018 Jun 14;13(6):e0198183. doi: 10.1371/journal.pone.0198183

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© 2018 Martin 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 credited.

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Fig 14 — Vertical axes show rate ratios relative to the overall average for each gestational age group within each figure. Error bars show 99% confidence intervals. Likelihood Ratio Test of H₀: Type of day differences do not differ between term, pre-term and post-term births.