RT Journal Article SR Electronic T1 Review: delayed pushing reduces rotational or mid pelvic instrumental deliveries but increases duration of the second stage of labour in women having epidural analgesia JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 122 OP 122 DO 10.1136/ebm.10.4.122 VO 10 IS 4 YR 2005 UL http://ebm.bmj.com/content/10/4/122.abstract AB