PT - JOURNAL ARTICLE AU - Steven P Cohen AU - David Anthony Provenzano AU - Samer Narouze TI - Facet guidelines, serial medial branch blocks and issues surrounding recommending procedures with no mechanistic foundation AID - 10.1136/rapm-2020-101634 DP - 2020 May 31 TA - Regional Anesthesia & Pain Medicine PG - rapm-2020-101634 4099 - http://rapm.bmj.com/content/early/2020/05/31/rapm-2020-101634.short 4100 - http://rapm.bmj.com/content/early/2020/05/31/rapm-2020-101634.full