RT Journal Article SR Electronic T1 Spread of Injectate in an Interrupted Epidural Space JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 39 OP 39 DO 10.1136/rapm-00115550-199722021-00039 VO 22 IS Suppl 2 A1 Sondra E. Shields A1 David W. Polly YR 1997 UL http://rapm.bmj.com/content/22/Suppl_2/39.abstract AB