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Luyet, Cédric; Wipfli, Marius; Eichenberger, Urs; Farkas, Zsolt Szücs (2010). Performing ultrasound-guided supraclavicular blocks in the outpatient setting-an additional security measure. Regional anesthesia and pain medicine, 35(2), p. 224. Hagerstown, Md.: Lippincott Williams & Wilkins 10.1097/AAP.0b013e3181c75dc8
