title: Fourth-degree lacerations and epidural anesthesia.
authors: University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA. sural@obgyn.upenn.edu
authors: S H
authors: SH
authors: Ural
authors: D
authors: D
authors: Roshanfekr
authors: F R
authors: FR
authors: Witter
mesh_terms: D000767:Anesthesia, Epidural; D005260:Female; D006801:Humans; D015994:Incidence; D022125:Lacerations / Q000453:epidemiology*; D016015:Logistic Models; D007744:Obstetric Labor Complications; D009772:Obstetrical Forceps / Q000009:adverse effects; D010298:Parity; D010502:Perineum / Q000293:injuries*; D011247:Pregnancy; D014620:Vacuum Extraction, Obstetrical / Q000009:adverse effects