RT Journal Article SR Electronic T1 Paravertebral catheter study leaves questions unanswered JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2020-102273 DO 10.1136/rapm-2020-102273 A1 Richa Wardhan A1 Sindhuja Nimma A1 Derek Covington YR 2020 UL http://rapm.bmj.com/content/early/2020/12/02/rapm-2020-102273.abstract AB