RT Journal Article SR Electronic T1 Double-blind randomized trial of 0.75% levobupivacaine compared to 0.75% bupivacaine for epidural anesthesia in patients undergoing major elective abdominal surgery JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 12 OP 12 DO 10.1136/rapm-00115550-199823031-00012 VO 23 IS Suppl 1 A1 D Kopacz A1 H Allen A1 G Thompson A1 B Gennery A1 K Watkins A1 C Stephenson A1 S Klakken A1 J Krider YR 1998 UL http://rapm.bmj.com/content/23/Suppl_1/12.abstract AB