RT Journal Article SR Electronic T1 Mean plasma bupivacaine concentrations following pectoral nerve blocks (PECS II) JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2021-102984 DO 10.1136/rapm-2021-102984 A1 James D Turner A1 Kevin T Cortese A1 Seiha T Kim A1 Zachary L McKee A1 Doug Jaffe A1 Daryl S Henshaw A1 Sean W Dobson A1 Robert Weller A1 Christopher J Edwards A1 J Wells Reynolds A1 Greg Russell YR 2021 UL http://rapm.bmj.com/content/early/2021/10/04/rapm-2021-102984.abstract AB