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. 2018 Dec 12;13(12):e0207236. doi: 10.1371/journal.pone.0207236

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© 2018 Nenko 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 2 — The predicted values of hazard from the model across the range of the data. (a) quadratic relationship between number of children born and maternal mortality risk (Hypothesis 2); (b) quadratic relationship between number of children survived to 15 years of age and maternal mortality risk (Hypothesis 2).