RT Journal Article SR Electronic T1 Peripheral Nerve Blockade May Be Safer in 2010 Than in 2000 JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 474-475 OP 474-475 DO 10.1097/AAP.0b013e3181ef4cdb VO 35 IS 5 A1 Michael J. Fredrickson YR 2010 UL http://rapm.bmj.com/content/35/5/474-475.abstract AB