TY - JOUR T1 - Ultrasound guidance for peripheral nerve blocks: an observational trend study of national data JF - Regional Anesthesia & Pain Medicine JO - Reg Anesth Pain Med SP - 681 LP - 683 DO - 10.1136/rapm-2019-101113 VL - 45 IS - 9 AU - Stephen C Haskins AU - Megan Fiasconaro AU - Lauren Wilson AU - Jashvant Poeran AU - Jiabin Liu AU - Stavros Memtsoudis Y1 - 2020/09/01 UR - http://rapm.bmj.com/content/45/9/681.abstract N2 - ER -