RT Journal Article SR Electronic T1 Hourglass-Pattern Recognition Simplifies Fascia Iliaca Compartment Block JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 467 OP 468 DO 10.1097/AAP.0b013e3182a1f772 VO 38 IS 5 A1 Harsimran Singh A1 David Jones YR 2013 UL http://rapm.bmj.com/content/38/5/467.abstract AB