RT Journal Article SR Electronic T1 18th Annual Pain Medicine Meeting of the American Society of Regional Anesthesia and Pain Medicine JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 162 OP 172 DO 10.1136/rapm-2020-ASRASpringabs VO 45 IS 2 YR 2020 UL http://rapm.bmj.com/content/45/2/162.abstract AB