RT Journal Article SR Electronic T1 Three Needle Visualization Technique for “MID-Line” Identification in Scoliotic Spines JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 92 OP 92 DO 10.1136/rapm-00115550-199823031-00092 VO 23 IS Suppl 1 A1 J. Ngeow A1 D. Wang YR 1998 UL http://rapm.bmj.com/content/23/Suppl_1/92.abstract AB