RT Journal Article SR Electronic T1 Transverse approach to the erector spinae block: is there more? JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 529 OP 530 DO 10.1136/rapm-2018-100280 VO 44 IS 4 A1 Narayanan, Madan A1 Venkataraju, Arun YR 2019 UL http://rapm.bmj.com/content/44/4/529.abstract AB