The influence of epidural analgesia on cesarean delivery rates: a randomized, prospective clinical trial.
Am J Obstet Gynecol. 1998 Dec;179(6 Pt 1):1527-33. doi: 10.1016/s0002-9378(98)70019-5.
Am J Obstet Gynecol. 1998.
PMID: 9855591
Clinical Trial.