RT Journal Article SR Electronic T1 Interscalene blocks for chronic upper extremity pain JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 50 OP 50 DO 10.1136/rapm-00115550-198813011-00050 VO 13 IS Suppl 1 A1 James J. Gibbons A1 Peter R. Wilson A1 Tim J. Lamer A1 Beth E. Gibson YR 1988 UL http://rapm.bmj.com/content/13/Suppl_1/50.abstract AB