RT Journal Article SR Electronic T1 Optimization of Axillary Block Success with Hand-Held Ultrasonic Needle Guidance and Dual Injection JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 57 OP 57 DO 10.1136/rapm-00115550-199823031-00057 VO 23 IS Suppl 1 A1 F. P. North A1 L. M. Broadman A1 R. A. Vance YR 1998 UL http://rapm.bmj.com/content/23/Suppl_1/57.abstract AB