Review

A meta-analysis of upright positions in the second stage to reduce instrumental deliveries in women with epidural analgesia.

Acta Obstet Gynecol Scand. 2005 Aug 1;84(8):794-8.
Review

The effects of epidural analgesia on labor, maternal, and neonatal outcomes: a systematic review.

Am. J. Obstet. Gynecol. 2002 May 1;186(5 Suppl Nature):S69-77.
Randomized Controlled Trial

Elevated maternal and fetal serum interleukin-6 levels are associated with epidural fever.

Am. J. Obstet. Gynecol. 2002 Oct 1;187(4):834-8.