RT Journal Article SR Electronic T1 271. Tap block under ultrasound guidance: the description of a “no pops” technique JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 130 OP 130 DO 10.1136/rapm-00115550-200709001-00249 VO 32 IS Suppl 1 A1 R. Blanco YR 2007 UL http://rapm.bmj.com/content/32/Suppl_1/130.2.abstract AB