TY - JOUR T1 - Dueling Guidelines JF - Regional Anesthesia & Pain Medicine JO - Reg Anesth Pain Med SP - 291 LP - 291 DO - 10.1097/AAP.0000000000000358 VL - 41 IS - 2 AU - Mark C. Norris Y1 - 2016/03/01 UR - http://rapm.bmj.com/content/41/2/291.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -