Nichols, Catherine M Differences in outcomes after third- versus fourth-degree perineal laceration repair: a prospective study. [electronic resource] - American journal of obstetrics and gynecology Aug 2005 - 530-4; discussion 534-6 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/j.ajog.2005.03.045 doi Subjects--Topical Terms: AdultAnal Canal--diagnostic imagingEndosonographyFecal Incontinence--epidemiologyFemaleHumansLacerations--complicationsObstetric Labor Complications--epidemiologyPerineum--injuriesPregnancyProspective Studies