RT Journal Article SR Electronic T1 Modified Approach to Block the Ganglion Impar (Ganglion of Watther) JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 544 OP 545 DO 10.1136/rapm-00115550-199520060-00015 VO 20 IS 6 A1 Wemm, Kenneth A1 Saberski, Lloyd YR 1995 UL http://rapm.bmj.com/content/20/6/544.abstract AB