title: Incidence and risk factors for third degree perineal tears.
authors: Department of Obstetrics and Gynecology, Royal Surrey County Hospital, Guildford, UK.
authors: K D
authors: KD
authors: Jones
mesh_terms: D001724:Birth Weight; D001946:Breech Presentation; D005260:Female; D006801:Humans; D015994:Incidence; D022125:Lacerations / Q000453:epidemiology*; D007744:Obstetric Labor Complications / Q000453:epidemiology*; D010298:Parity; D010502:Perineum / Q000293:injuries*; D011247:Pregnancy; D012189:Retrospective Studies; D012307:Risk Factors