RT Journal Article SR Electronic T1 Posterior quadratus lumborum block in the combat environment JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2018-100136 DO 10.1136/rapm-2018-100136 A1 Dhanjal, Sandeep T A1 Chow, Annie A1 Nick, Cameron T A1 Cooper, Gina YR 2019 UL http://rapm.bmj.com/content/early/2019/06/19/rapm-2018-100136.abstract AB