RT Journal Article SR Electronic T1 Reply to Dr Sala-Blanch et al JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 465 OP 466 DO 10.1097/AAP.0b013e3182a26c1d VO 38 IS 5 A1 Anahi Perlas A1 Vincent WS Chan YR 2013 UL http://rapm.bmj.com/content/38/5/465.abstract AB