RT Journal Article SR Electronic T1 Reply to Dr Murgatroyd et al JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 460 OP 461 DO 10.1097/AAP.0b013e3182a1f299 VO 38 IS 5 A1 Ali Shariat YR 2013 UL http://rapm.bmj.com/content/38/5/460.abstract AB