PT - JOURNAL ARTICLE AU - Shannon L Roberts TI - The importance of precise, validated bony landmarks for blocks and radiofrequency ablation AID - 10.1136/rapm-2019-100879 DP - 2019 Aug 24 TA - Regional Anesthesia & Pain Medicine PG - rapm-2019-100879 4099 - http://rapm.bmj.com/content/early/2019/08/24/rapm-2019-100879.short 4100 - http://rapm.bmj.com/content/early/2019/08/24/rapm-2019-100879.full