Dufour, E Ultrasound-guided perineural circumferential median nerve block in carpal tunnel syndrome. [electronic resource] - Anaesthesia Apr 2013 - 434-6 p. digital Publication Type: Letter ISSN: 1365-2044 Standard No.: 10.1111/anae.12212 doi Subjects--Topical Terms: AdultCarpal Tunnel Syndrome--diagnostic imagingHumansMedian Nerve--diagnostic imagingNerve Block--methodsUltrasonography