![Incidence and risk factors for obstetric anal sphincter ruptures, OASIS, following the introduction of preventive interventions. A retrospective cohort study from a Norwegian hospital 2012–2017]()
Incidence and risk factors for obstetric anal sphincter ruptures, OASIS, following the introduction of preventive interventions. A retrospective cohort study from a Norwegian hospital 2012–2017Selmer-Olsen, Tone; Nohr, Ellen Aagaard; Tappert, Christian; Eggebø, Torbjørn Moe · Sexual & Reproductive Healthcare · 2019