RT Journal Article SR Electronic T1 Erector spinae plane block dilemma JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 842 OP 843 DO 10.1136/rapm-2020-101310 VO 45 IS 10 A1 Elkoundi, Abdelghafour A1 El Koraichi, Alae YR 2020 UL http://rapm.bmj.com/content/45/10/842.abstract AB