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. 1849 Jul;4(7):1–35.

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Parturition, and the Principles and Practice of Obstetrics

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC5204431 PMID: 30164963

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