RT Journal Article SR Electronic T1 Superior costotransverse ligament: a new target for fascial plane blocks JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 840 OP 841 DO 10.1136/rapm-2020-101315 VO 45 IS 10 A1 Emanuele Piraccini A1 Helen Byrne A1 Stefania Taddei YR 2020 UL http://rapm.bmj.com/content/45/10/840.2.abstract AB