RT Journal Article SR Electronic T1 Comparison of the analgesic effects of single shot: 291. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 78 OP 78 DO 10.1136/rapm-00115550-200409002-00148 VO 29 IS Suppl 2 A1 Alkan, M A1 Kaya, K YR 2004 UL http://rapm.bmj.com/content/29/Suppl_2/78.abstract AB