Upper trunk block for shoulder analgesia with potential phrenic nerve sparing: a preliminary anatomical report
José Cros Campoy, Oscar Domingo Bosch, Jaume Pomés, Jing Lee, Ben Fox, Xavier Sala-Blanch
Regional Anesthesia & Pain Medicine Sep 2019, 44 (9) 872-874; DOI: 10.1136/rapm-2019-100404