PT - JOURNAL ARTICLE AU - Enrique Monzó AU - Admir Hadzic TI - Costoclavicular approach to the brachial plexus block: simple or double injection? AID - 10.1136/rapm-2019-100852 DP - 2019 Sep 28 TA - Regional Anesthesia & Pain Medicine PG - rapm-2019-100852 4099 - http://rapm.bmj.com/content/early/2019/09/28/rapm-2019-100852.short 4100 - http://rapm.bmj.com/content/early/2019/09/28/rapm-2019-100852.full