pelvic floor ultrasound

Lateral episiotomy versus no episiotomy to reduce obstetric anal sphincter injury in vacuum-assisted delivery in nulliparous women: study protocol on a randomised controlled trial
Sandra Bergendahl, Victoria Ankarcrona, Åsa Leijonhufvud, Susanne Hesselman, Sofie Karlström, Helena Kopp Kallner, Sophia Brismar Wendel

BMJ Open Mar 2019, 9 (3) e025050; DOI: 10.1136/bmjopen-2018-025050

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pelvic floor ultrasound