RT Journal Article SR Electronic T1 Assessing surgical anesthesia for shoulder surgery JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2019-100981 DO 10.1136/rapm-2019-100981 A1 Julián Aliste A1 Iver Cristi-Sánchez A1 Loreley Bermúdez A1 Sebastián Layera A1 Daniela Bravo A1 De Q Tran YR 2019 UL http://rapm.bmj.com/content/early/2019/12/31/rapm-2019-100981.abstract AB