RT Journal Article SR Electronic T1 Brachial Plexus Block with Bupivacaine or Bupivacaine Plus Fentanyl: A Comparative Study JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 5 OP 5 DO 10.1136/rapm-00115550-199318011-00005 VO 18 IS Suppl 1 A1 Sakata, Rioko K. A1 Soares, Emilia M. A1 Yassuda, Heitor H. A1 Tardelli, Maria Ângela A1 Iwata, Nilza M. A1 Yamashita, Américo M. YR 1993 UL http://rapm.bmj.com/content/18/Suppl_1/5.abstract AB