Key points are not available for this paper at this time.
Obstetric Anesthesia Digest: June 2011 - Volume 31 - Issue 2 - p 83-84 doi: 10.1097/01.aoa.0000397113.95428.cb
Merién et al. (Wed,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: