RT Journal Article SR Electronic T1 Reply to Dr Yu et al JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 220 OP 221 DO 10.1097/AAP.0000000000000728 VO 43 IS 2 A1 David B. Auyong A1 Lucy S. Hostetter A1 Stanley C. Yuan A1 April E. Slee A1 Neil A. Hanson YR 2018 UL http://rapm.bmj.com/content/43/2/220.2.abstract AB