RT Journal Article SR Electronic T1 Comparison of Bupivacaine Hydrochloride and Carbonated Bupivacaine in Brachial Plexus Block by the Interscalene Technique JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 127 OP 128 DO 10.1136/rapm-00002370-198107000-00020 VO 6 IS 3 A1 Katz, Jordan YR 1981 UL http://rapm.bmj.com/content/6/3/127.3.abstract AB