RT Journal Article SR Electronic T1 A Transarticular Approach to Blockade of the Ganglion IMPAR (Ganglion of Walther) JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 103 OP 103 DO 10.1136/rapm-00115550-199823031-00103 VO 23 IS Suppl 1 A1 John B. Swofford A1 David M. Ratzman YR 1998 UL http://rapm.bmj.com/content/23/Suppl_1/103.abstract AB