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. 2018 Oct 29;8(4):e289–e294. doi: 10.1055/s-0038-1675352

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This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 1 — Rate of OASIS per month in nulliparous women with a vaginal delivery before and after the start of the intervention. P-chart. Horizontal line showing the extended baseline from the preintervention period. Vertical line showing the start of the intervention period, Herning Regional Hospital, Denmark. OASIS, obstetric anal sphincter injury.