RT Journal Article SR Electronic T1 Evaluation of lumbar medial branch blocks: how does the second block influence progression to radiofrequency ablation? An infographic JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2022-104130 DO 10.1136/rapm-2022-104130 A1 David Anthony Provenzano A1 Jozef E Leech A1 Jason S Kilgore A1 Lauren A Sugden YR 2022 UL http://rapm.bmj.com/content/early/2022/11/15/rapm-2022-104130.abstract AB