RT Journal Article SR Electronic T1 Minimum Volume, Meticulous Method JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 480 OP 480 DO 10.1097/AAP.0b013e3181f02b0d VO 35 IS 5 A1 Beenu Madhavan A1 Imran Ahmad YR 2010 UL http://rapm.bmj.com/content/35/5/480.abstract AB