RT Journal Article SR Electronic T1 Neurostimulation (tsui test) for confirmation of epidural catheter tip position during continuous epidural analgesia - preliminary report: 72. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 25 OP 25 DO 10.1016/rapm-00115550-200609002-00047 VO 31 IS Suppl 2 A1 J. G. Förster A1 T. T. Niemi A1 P. H. Rosenberg YR 2006 UL http://rapm.bmj.com/content/31/Suppl_2/25.2.abstract AB