TY - JOUR T1 - Costoclavicular approach to the brachial plexus block: simple or double injection? JF - Regional Anesthesia & Pain Medicine JO - Reg Anesth Pain Med DO - 10.1136/rapm-2019-100852 SP - rapm-2019-100852 AU - Enrique Monzó AU - Admir Hadzic Y1 - 2019/09/28 UR - http://rapm.bmj.com/content/early/2019/09/28/rapm-2019-100852.abstract N2 - ER -