title: Delivery positions and perineal outcome.
mesh_terms: D000293:Adolescent; D000328:Adult; D036861:Delivery, Obstetric; D004841:Episiotomy; D005260:Female; D006801:Humans; D007746:Labor Presentation; D007743:Labor, Obstetric; D010502:Perineum / Q000293:injuries; D011187:Posture; D011247:Pregnancy; D012189:Retrospective Studies; D012421:Rupture