RT Journal Article SR Electronic T1 Safer alternatives to transversus thoracis muscle plane block JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2019-100666 DO 10.1136/rapm-2019-100666 A1 Diego García Simón A1 Mario Fajardo Perez YR 2019 UL http://rapm.bmj.com/content/early/2019/07/11/rapm-2019-100666.abstract AB